{
  "age_old": {
    "display": "65",
    "estimand": "definition: the age at and above which a resident counts as an older adult in the share-aged-65-and-over input",
    "note": "",
    "period": "2019-2023",
    "population": "residents",
    "source": "acs",
    "unit": "years of age",
    "value": 65,
    "weights": "none (definition)"
  },
  "ari_boot_median": {
    "display": "0.95",
    "estimand": "agreement of the typology with the median of the refits on bootstrap resamples of tracts",
    "n": 81343,
    "nUnit": "tracts",
    "note": "",
    "period": "ACS 2019-2023, 2020 land area",
    "population": "census tracts in the typology",
    "source": "acs",
    "unit": "adjusted Rand index (1 = identical partitions, 0 = chance agreement)",
    "value": 0.948743,
    "weights": "none (each tract counts once)"
  },
  "ari_boot_min": {
    "display": "0.55",
    "estimand": "agreement of the typology with the lowest of the refits on bootstrap resamples of tracts",
    "n": 81343,
    "nUnit": "tracts",
    "note": "",
    "period": "ACS 2019-2023, 2020 land area",
    "population": "census tracts in the typology",
    "source": "acs",
    "unit": "adjusted Rand index (1 = identical partitions, 0 = chance agreement)",
    "value": 0.546808,
    "weights": "none (each tract counts once)"
  },
  "ari_old": {
    "display": "0.41",
    "estimand": "agreement of the typology with the chapter's earlier k-means fit on thirteen inputs, published until October 28, 2026, (the seven inputs of the typology plus the Black and Hispanic shares, life expectancy, the adult income rank, diabetes and smoking; same seed, groups and starts)",
    "n": 77745,
    "nUnit": "tracts",
    "note": "",
    "period": "tract inputs from 2010 to 2023",
    "population": "census tracts in the typology that have all thirteen inputs of the earlier typology",
    "source": "acs",
    "unit": "adjusted Rand index (1 = identical partitions, 0 = chance agreement)",
    "value": 0.405056,
    "weights": "none (each tract counts once)"
  },
  "ari_weighted": {
    "display": "0.84",
    "estimand": "agreement of the typology with a refit that weights each tract by its population",
    "n": 81343,
    "nUnit": "tracts",
    "note": "",
    "period": "ACS 2019-2023, 2020 land area",
    "population": "census tracts in the typology",
    "source": "acs",
    "unit": "adjusted Rand index (1 = identical partitions, 0 = chance agreement)",
    "value": 0.838288,
    "weights": "none (each tract counts once)"
  },
  "big_min_tracts": {
    "display": "100",
    "estimand": "definition: the least number of typed tracts for the types-per-county count",
    "note": "",
    "period": "2019-2023",
    "population": "counties",
    "source": "acs",
    "unit": "tracts",
    "value": 100,
    "weights": "none (definition)"
  },
  "big_types_median": {
    "display": "3",
    "estimand": "median across counties of the number of types that hold at least a tenth of the county's typed residents",
    "n": 173,
    "nUnit": "counties",
    "note": "",
    "period": "2019-2023",
    "population": "counties with at least 100 typed tracts",
    "source": "acs",
    "unit": "types",
    "value": 3,
    "weights": "none (each county counts once)"
  },
  "ch_exposure_yr": {
    "display": "0.04",
    "estimand": "exposure effect reported by Chetty and Hendren (2018, Quarterly Journal of Economics 133(3)): federal tax records, children born 1980 to 1988, baseline sample of one-time movers between commuting zones; movers design that compares children who moved at different ages, with sibling comparisons (family fixed effects) and moves caused by displacement shocks; the benchmark is the adult income rank of children of permanent residents of the destination at the same parent income; copied from the paper and not computed in this build",
    "note": "A published estimate, not a result of this build.",
    "period": "children born 1980 to 1988, moves from 1997 to 2010",
    "population": "children in the study's baseline sample whose families moved once between commuting zones",
    "source": "published-estimates",
    "unit": "percentiles of adult income rank per year of childhood exposure, per percentile of difference in permanent residents' outcomes",
    "value": 0.04,
    "weights": "none (reported estimate)"
  },
  "cover_min": {
    "display": "50%",
    "estimand": "definition: a county gets a modal type when its typed tracts hold at least this share of its residents",
    "note": "",
    "period": "2019-2023",
    "population": "counties",
    "source": "acs",
    "unit": "percent of a county's residents",
    "value": 50,
    "weights": "none (definition)"
  },
  "few_tracts": {
    "display": "3",
    "estimand": "definition: a county with fewer typed tracts than this is flagged as resting on very few tracts",
    "note": "",
    "period": "2019-2023",
    "population": "counties",
    "source": "acs",
    "unit": "tracts",
    "value": 3,
    "weights": "none (definition)"
  },
  "inst_gq_pct": {
    "display": "25%",
    "estimand": "definition: a tract is institutional when at least this share of its residents live in group quarters (SVI 2022 ep_groupq)",
    "note": "",
    "period": "SVI 2022 (ACS 2018-2022)",
    "population": "census tracts",
    "source": "svi",
    "unit": "percent of a tract's residents",
    "value": 25,
    "weights": "none (definition)"
  },
  "k_best": {
    "display": "2",
    "estimand": "number of types with the highest mean silhouette in the comparison",
    "note": "",
    "period": "ACS 2019-2023, 2020 land area",
    "population": "k-means fits compared for the silhouette",
    "source": "acs",
    "unit": "types",
    "value": 2,
    "weights": "none (definition)"
  },
  "k_hi": {
    "display": "10",
    "estimand": "definition: the most types in the silhouette comparison",
    "note": "",
    "period": "ACS 2019-2023, 2020 land area",
    "population": "k-means fits compared for the silhouette",
    "source": "acs",
    "unit": "types",
    "value": 10,
    "weights": "none (definition)"
  },
  "k_lo": {
    "display": "2",
    "estimand": "definition: the fewest types in the silhouette comparison",
    "note": "",
    "period": "ACS 2019-2023, 2020 land area",
    "population": "k-means fits compared for the silhouette",
    "source": "acs",
    "unit": "types",
    "value": 2,
    "weights": "none (definition)"
  },
  "le_gap": {
    "ci": [
      7.1,
      7.9
    ],
    "ciLevel": 0.95,
    "display": "7.5",
    "estimand": "difference between the population-weighted mean life expectancy of type 1 minus type 8 (High-income owners minus High-poverty, single-parent), bootstrap interval over counties with shared draws",
    "n": 14779,
    "nUnit": "tracts",
    "note": "",
    "period": "deaths in 2010 to 2015",
    "population": "residents of the tracts of types 1 and 8 that have a life expectancy",
    "source": "usaleep",
    "unit": "years of life expectancy at birth",
    "value": 7.46282,
    "weights": "ACS 2019-2023 tract population"
  },
  "le_spread_c": {
    "ci": [
      7.1,
      7.9
    ],
    "ciLevel": 0.95,
    "display": "7.5",
    "estimand": "highest minus lowest population-weighted mean life expectancy across the groups of the eight types of this chapter, on the tracts of the comparison, bootstrap interval over counties",
    "n": 77745,
    "nUnit": "tracts",
    "note": "",
    "period": "deaths in 2010 to 2015",
    "population": "residents of the typed tracts that have all thirteen inputs of the earlier typology",
    "source": "usaleep",
    "unit": "years of life expectancy at birth",
    "value": 7.46322,
    "weights": "ACS 2019-2023 tract population"
  },
  "le_spread_old": {
    "ci": [
      9.8,
      10.2
    ],
    "ciLevel": 0.95,
    "display": "10.0",
    "estimand": "highest minus lowest population-weighted mean life expectancy across the groups of the chapter's earlier k-means fit on thirteen inputs, published until October 28, 2026, (the seven inputs of the typology plus the Black and Hispanic shares, life expectancy, the adult income rank, diabetes and smoking; same seed, groups and starts), on the tracts of the comparison, bootstrap interval over counties",
    "n": 77745,
    "nUnit": "tracts",
    "note": "",
    "period": "deaths in 2010 to 2015",
    "population": "residents of the typed tracts that have all thirteen inputs of the earlier typology",
    "source": "usaleep",
    "unit": "years of life expectancy at birth",
    "value": 9.99144,
    "weights": "ACS 2019-2023 tract population"
  },
  "med_modal_share": {
    "display": "68.1%",
    "estimand": "median across counties of the share of typed residents who live in tracts of the county's modal type",
    "n": 3110,
    "nUnit": "counties",
    "note": "",
    "period": "2019-2023",
    "population": "counties with a modal type",
    "source": "acs",
    "unit": "percent of a county's typed residents",
    "value": 68.1,
    "weights": "none (each county counts once)"
  },
  "n_big": {
    "display": "173",
    "estimand": "count of counties with at least 100 typed tracts (the cutoff is part of the definition)",
    "note": "",
    "period": "2019-2023",
    "population": "counties with at least 100 typed tracts",
    "source": "acs",
    "unit": "counties",
    "value": 173,
    "weights": "none (full count)"
  },
  "n_compare": {
    "display": "77,745",
    "estimand": "count of typed tracts that have all thirteen inputs of the earlier typology (the tracts of the comparison)",
    "note": "",
    "period": "tract inputs from 2010 to 2023",
    "population": "census tracts in the typology",
    "source": "acs",
    "unit": "tracts",
    "value": 77745,
    "weights": "none (full count)"
  },
  "n_counties_few": {
    "display": "485",
    "estimand": "count of counties with a modal type that rests on fewer than three typed tracts",
    "note": "",
    "period": "2019-2023",
    "population": "counties and county equivalents on the county map (3,143, Connecticut as eight legacy counties)",
    "source": "acs",
    "unit": "counties",
    "value": 485,
    "weights": "none (full count)"
  },
  "n_counties_low_cover": {
    "display": "20",
    "estimand": "count of counties whose typed tracts hold under half of the county's residents",
    "note": "",
    "period": "2019-2023",
    "population": "counties and county equivalents on the county map (3,143, Connecticut as eight legacy counties)",
    "source": "acs",
    "unit": "counties",
    "value": 20,
    "weights": "none (full count)"
  },
  "n_counties_no_tract": {
    "display": "13",
    "estimand": "count of counties with no tract that is not institutional, has every input and has more than the floor of residents",
    "note": "",
    "period": "2019-2023",
    "population": "counties and county equivalents on the county map (3,143, Connecticut as eight legacy counties)",
    "source": "acs",
    "unit": "counties",
    "value": 13,
    "weights": "none (full count)"
  },
  "n_counties_typed": {
    "display": "3,110",
    "estimand": "count of counties with a modal type",
    "note": "",
    "period": "2019-2023",
    "population": "counties and county equivalents on the county map (3,143, Connecticut as eight legacy counties)",
    "source": "acs",
    "unit": "counties",
    "value": 3110,
    "weights": "none (full count)"
  },
  "n_county_ties": {
    "display": "1",
    "estimand": "count of counties where two types hold exactly the same number of typed residents (the county takes the lower-numbered type)",
    "note": "",
    "period": "2019-2023",
    "population": "counties and county equivalents on the county map (3,143, Connecticut as eight legacy counties)",
    "source": "acs",
    "unit": "counties",
    "value": 1,
    "weights": "none (full count)"
  },
  "n_features": {
    "display": "7",
    "estimand": "count of inputs of the typology (definition)",
    "note": "",
    "period": "ACS 2019-2023, 2020 land area",
    "population": "measures standardized and given to k-means",
    "source": "acs",
    "unit": "inputs",
    "value": 7,
    "weights": "none (definition)"
  },
  "n_features_old": {
    "display": "13",
    "estimand": "count of inputs of the earlier typology (definition)",
    "note": "",
    "period": "2010 to 2023",
    "population": "measures standardized and given to k-means in the earlier typology",
    "source": "acs",
    "unit": "inputs",
    "value": 13,
    "weights": "none (definition)"
  },
  "n_le": {
    "display": "77,763",
    "estimand": "count of typed tracts with a USALEEP life expectancy estimate (the tracts over which life expectancy is compared)",
    "note": "",
    "period": "deaths in 2010 to 2015",
    "population": "census tracts in the typology",
    "source": "usaleep",
    "unit": "tracts",
    "value": 77763,
    "weights": "none (full count)"
  },
  "n_modal_t1": {
    "display": "103",
    "estimand": "count of counties where type 1 (High-income owners) holds the most residents",
    "note": "",
    "period": "2019-2023",
    "population": "counties and county equivalents on the county map (3,143, Connecticut as eight legacy counties)",
    "source": "acs",
    "unit": "counties",
    "value": 103,
    "weights": "none (full count)"
  },
  "n_modal_t3": {
    "display": "438",
    "estimand": "count of counties where type 3 (Middle-income owners) holds the most residents",
    "note": "",
    "period": "2019-2023",
    "population": "counties and county equivalents on the county map (3,143, Connecticut as eight legacy counties)",
    "source": "acs",
    "unit": "counties",
    "value": 438,
    "weights": "none (full count)"
  },
  "n_modal_t4": {
    "display": "2,207",
    "estimand": "count of counties where type 4 (Low-density owners) holds the most residents",
    "note": "",
    "period": "2019-2023",
    "population": "counties and county equivalents on the county map (3,143, Connecticut as eight legacy counties)",
    "source": "acs",
    "unit": "counties",
    "value": 2207,
    "weights": "none (full count)"
  },
  "n_modal_t6": {
    "display": "222",
    "estimand": "count of counties where type 6 (Moderate-income, mixed-tenure) holds the most residents",
    "note": "",
    "period": "2019-2023",
    "population": "counties and county equivalents on the county map (3,143, Connecticut as eight legacy counties)",
    "source": "acs",
    "unit": "counties",
    "value": 222,
    "weights": "none (full count)"
  },
  "n_modal_t8": {
    "display": "28",
    "estimand": "count of counties where type 8 (High-poverty, single-parent) holds the most residents",
    "note": "",
    "period": "2019-2023",
    "population": "counties and county equivalents on the county map (3,143, Connecticut as eight legacy counties)",
    "source": "acs",
    "unit": "counties",
    "value": 28,
    "weights": "none (full count)"
  },
  "n_sample": {
    "display": "6,000",
    "estimand": "size of a random sample drawn with a fixed seed for the scatter plot",
    "n": 81343,
    "nUnit": "tracts",
    "note": "",
    "period": "ACS 2019-2023, 2020 land area",
    "population": "census tracts in the typology",
    "source": "acs",
    "unit": "tracts",
    "value": 6000,
    "weights": "none (sample size)"
  },
  "n_tracts": {
    "display": "81,343",
    "estimand": "count of tracts in the typology",
    "note": "",
    "period": "tract boundaries of 2020; inputs from ACS 2019-2023",
    "population": "census tracts with every input, not institutional, with more residents than the floor",
    "source": "acs",
    "unit": "tracts",
    "value": 81343,
    "weights": "none (full count)"
  },
  "n_tracts_all": {
    "display": "85,396",
    "estimand": "count of 2020 census tracts in the atlas",
    "note": "",
    "period": "tract boundaries of 2020; inputs from ACS 2019-2023",
    "population": "census tracts of the 2020 census (50 states, DC and Puerto Rico)",
    "source": "acs",
    "unit": "tracts",
    "value": 85396,
    "weights": "none (full count)"
  },
  "n_tracts_inst": {
    "display": "1,541",
    "estimand": "count of tracts flagged institutional (SVI 2022 group-quarters share of 25 percent or more, plus one known tract)",
    "note": "",
    "period": "tract boundaries of 2020; inputs from ACS 2019-2023",
    "population": "census tracts of the 50 states and DC with every input",
    "source": "acs",
    "unit": "tracts",
    "value": 1541,
    "weights": "none (full count)"
  },
  "n_tracts_missing": {
    "display": "1,498",
    "estimand": "count of tracts missing at least one of the seven inputs or with no residents",
    "note": "",
    "period": "tract boundaries of 2020; inputs from ACS 2019-2023",
    "population": "census tracts of the 50 states and DC",
    "source": "acs",
    "unit": "tracts",
    "value": 1498,
    "weights": "none (full count)"
  },
  "n_tracts_pr": {
    "display": "981",
    "estimand": "count of Puerto Rico tracts, left out because the county map and the outcome measures cover the 50 states and DC",
    "note": "",
    "period": "tract boundaries of 2020; inputs from ACS 2019-2023",
    "population": "census tracts of Puerto Rico",
    "source": "acs",
    "unit": "tracts",
    "value": 981,
    "weights": "none (full count)"
  },
  "n_tracts_small": {
    "display": "33",
    "estimand": "count of tracts with the population floor or fewer residents",
    "note": "",
    "period": "tract boundaries of 2020; inputs from ACS 2019-2023",
    "population": "census tracts of the 50 states and DC with every input, not institutional",
    "source": "acs",
    "unit": "tracts",
    "value": 33,
    "weights": "none (full count)"
  },
  "n_untyped": {
    "display": "3,072",
    "estimand": "count of tracts missing an input, institutional or with the floor of residents or fewer",
    "note": "",
    "period": "2019-2023",
    "population": "census tracts of the 50 states and DC that are not in the typology",
    "source": "acs",
    "unit": "tracts",
    "value": 3072,
    "weights": "none (full count)"
  },
  "pc12_evr": {
    "display": "68.4%",
    "estimand": "share of variance captured by the first two principal components",
    "n": 81343,
    "nUnit": "tracts",
    "note": "",
    "period": "ACS 2019-2023, 2020 land area",
    "population": "census tracts in the typology",
    "source": "acs",
    "unit": "percent of the total variance of the standardized inputs",
    "value": 68.3716,
    "weights": "none (each tract counts once)"
  },
  "pc1_evr": {
    "display": "43.9%",
    "estimand": "share of variance captured by the first principal component",
    "n": 81343,
    "nUnit": "tracts",
    "note": "",
    "period": "ACS 2019-2023, 2020 land area",
    "population": "census tracts in the typology",
    "source": "acs",
    "unit": "percent of the total variance of the standardized inputs",
    "value": 43.9124,
    "weights": "none (each tract counts once)"
  },
  "pc2_evr": {
    "display": "24.5%",
    "estimand": "share of variance captured by the second principal component",
    "n": 81343,
    "nUnit": "tracts",
    "note": "",
    "period": "ACS 2019-2023, 2020 land area",
    "population": "census tracts in the typology",
    "source": "acs",
    "unit": "percent of the total variance of the standardized inputs",
    "value": 24.4592,
    "weights": "none (each tract counts once)"
  },
  "pop_floor": {
    "display": "200",
    "estimand": "definition: a tract with this many residents or fewer is left out of the typology",
    "note": "",
    "period": "2019-2023",
    "population": "census tracts",
    "source": "acs",
    "unit": "residents",
    "value": 200,
    "weights": "none (definition)"
  },
  "pop_in_modal": {
    "display": "42.9%",
    "estimand": "share of residents who live in a tract of their own county's modal type",
    "n": 81314,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of typed tracts in counties with a modal type",
    "source": "acs",
    "unit": "percent of typed residents",
    "value": 42.9133,
    "weights": "none (full count of estimates)"
  },
  "pop_typed_share": {
    "display": "97.7%",
    "estimand": "residents of tracts in the typology as a share of all residents of the 50 states and DC",
    "n": 81343,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the 50 states and DC",
    "source": "acs",
    "unit": "percent of residents",
    "value": 97.6969,
    "weights": "none (full count of estimates)"
  },
  "r2_jail": {
    "ci": [
      7,
      9
    ],
    "ciLevel": 0.95,
    "display": "8%",
    "estimand": "R squared of the eight type means: variance between types over total variance of the tract measure, bootstrap interval over counties",
    "n": 81250,
    "nUnit": "tracts",
    "note": "",
    "period": "children born 1978 to 1983, incarceration on April 1, 2010",
    "population": "residents of the tracts in the typology that have the measure",
    "source": "opportunity-atlas",
    "unit": "percent of the population-weighted variance of tract incarceration share",
    "value": 7.70233,
    "weights": "ACS 2019-2023 tract population"
  },
  "r2_le": {
    "ci": [
      30,
      34
    ],
    "ciLevel": 0.95,
    "display": "32%",
    "estimand": "R squared of the eight type means: variance between types over total variance of the tract measure, bootstrap interval over counties",
    "n": 77763,
    "nUnit": "tracts",
    "note": "",
    "period": "deaths in 2010 to 2015",
    "population": "residents of the tracts in the typology that have the measure",
    "source": "usaleep",
    "unit": "percent of the population-weighted variance of tract life expectancy",
    "value": 31.6663,
    "weights": "ACS 2019-2023 tract population"
  },
  "r2_le_c": {
    "ci": [
      30,
      34
    ],
    "ciLevel": 0.95,
    "display": "32%",
    "estimand": "R squared of the group means of the eight types of this chapter on the tracts of the comparison that have the measure, bootstrap interval over counties",
    "n": 77745,
    "nUnit": "tracts",
    "note": "",
    "period": "deaths in 2010 to 2015",
    "population": "residents of the typed tracts that have all thirteen inputs of the earlier typology",
    "source": "usaleep",
    "unit": "percent of the population-weighted variance of tract life expectancy",
    "value": 31.6651,
    "weights": "ACS 2019-2023 tract population"
  },
  "r2_le_old": {
    "ci": [
      47,
      51
    ],
    "ciLevel": 0.95,
    "display": "49%",
    "estimand": "R squared of the group means of the chapter's earlier k-means fit on thirteen inputs, published until October 28, 2026, (the seven inputs of the typology plus the Black and Hispanic shares, life expectancy, the adult income rank, diabetes and smoking; same seed, groups and starts) on the tracts of the comparison that have the measure, bootstrap interval over counties",
    "n": 77745,
    "nUnit": "tracts",
    "note": "",
    "period": "deaths in 2010 to 2015",
    "population": "residents of the typed tracts that have all thirteen inputs of the earlier typology",
    "source": "usaleep",
    "unit": "percent of the population-weighted variance of tract life expectancy",
    "value": 49.0391,
    "weights": "ACS 2019-2023 tract population"
  },
  "r2_mhlth": {
    "ci": [
      57,
      61
    ],
    "ciLevel": 0.95,
    "display": "59%",
    "estimand": "R squared of the eight type means: variance between types over total variance of the tract measure, bootstrap interval over counties",
    "n": 81341,
    "nUnit": "tracts",
    "note": "",
    "period": "PLACES 2024 release, BRFSS 2022",
    "population": "residents of the tracts in the typology that have the measure",
    "source": "places",
    "unit": "percent of the population-weighted variance of tract frequent-mental-distress rate",
    "value": 58.9311,
    "weights": "ACS 2019-2023 tract population"
  },
  "r2_smk": {
    "ci": [
      56,
      60
    ],
    "ciLevel": 0.95,
    "display": "58%",
    "estimand": "R squared of the eight type means: variance between types over total variance of the tract measure, bootstrap interval over counties",
    "n": 81341,
    "nUnit": "tracts",
    "note": "",
    "period": "PLACES 2024 release, BRFSS 2022",
    "population": "residents of the tracts in the typology that have the measure",
    "source": "places",
    "unit": "percent of the population-weighted variance of tract smoking rate",
    "value": 58.0393,
    "weights": "ACS 2019-2023 tract population"
  },
  "r2_teen": {
    "ci": [
      30,
      34
    ],
    "ciLevel": 0.95,
    "display": "32%",
    "estimand": "R squared of the eight type means: variance between types over total variance of the tract measure, bootstrap interval over counties",
    "n": 81154,
    "nUnit": "tracts",
    "note": "",
    "period": "children born 1978 to 1983",
    "population": "residents of the tracts in the typology that have the measure",
    "source": "opportunity-atlas",
    "unit": "percent of the population-weighted variance of tract teen-birth share",
    "value": 32.1321,
    "weights": "ACS 2019-2023 tract population"
  },
  "r2_teen_c": {
    "ci": [
      30,
      35
    ],
    "ciLevel": 0.95,
    "display": "33%",
    "estimand": "R squared of the group means of the eight types of this chapter on the tracts of the comparison that have the measure, bootstrap interval over counties",
    "n": 77687,
    "nUnit": "tracts",
    "note": "",
    "period": "children born 1978 to 1983",
    "population": "residents of the typed tracts that have all thirteen inputs of the earlier typology",
    "source": "opportunity-atlas",
    "unit": "percent of the population-weighted variance of tract teen-birth share",
    "value": 32.5089,
    "weights": "ACS 2019-2023 tract population"
  },
  "r2_teen_old": {
    "ci": [
      44,
      48
    ],
    "ciLevel": 0.95,
    "display": "46%",
    "estimand": "R squared of the group means of the chapter's earlier k-means fit on thirteen inputs, published until October 28, 2026, (the seven inputs of the typology plus the Black and Hispanic shares, life expectancy, the adult income rank, diabetes and smoking; same seed, groups and starts) on the tracts of the comparison that have the measure, bootstrap interval over counties",
    "n": 77687,
    "nUnit": "tracts",
    "note": "",
    "period": "children born 1978 to 1983",
    "population": "residents of the typed tracts that have all thirteen inputs of the earlier typology",
    "source": "opportunity-atlas",
    "unit": "percent of the population-weighted variance of tract teen-birth share",
    "value": 46.1649,
    "weights": "ACS 2019-2023 tract population"
  },
  "sil_best": {
    "display": "0.27",
    "estimand": "mean silhouette of the k-means fit (10 starts) with the number of types that scores highest",
    "n": 20000,
    "nUnit": "tracts",
    "note": "",
    "period": "ACS 2019-2023, 2020 land area",
    "population": "a random sample of census tracts in the typology",
    "source": "acs",
    "unit": "silhouette (-1 to 1)",
    "value": 0.268704,
    "weights": "none (each tract counts once)"
  },
  "sil_best_bench": {
    "display": "0.24",
    "estimand": "mean silhouette of the same number of k-means groups (10 starts) in simulated data with no clusters: a multivariate normal with the correlations of the inputs and one draw per tract",
    "n": 20000,
    "nUnit": "tracts",
    "note": "",
    "period": "ACS 2019-2023, 2020 land area",
    "population": "a random sample of census tracts in the typology",
    "source": "acs",
    "unit": "silhouette (-1 to 1)",
    "value": 0.237987,
    "weights": "none (each tract counts once)"
  },
  "sil_gauss": {
    "display": "0.14",
    "estimand": "mean silhouette of an 8-group k-means fit to simulated data with no clusters: a multivariate normal with the correlations of the inputs and one draw per tract",
    "n": 20000,
    "nUnit": "tracts",
    "note": "",
    "period": "ACS 2019-2023, 2020 land area",
    "population": "a random sample of census tracts in the typology",
    "source": "acs",
    "unit": "silhouette (-1 to 1)",
    "value": 0.136129,
    "weights": "none (each tract counts once)"
  },
  "sil_k8": {
    "display": "0.19",
    "estimand": "mean silhouette of the eight types on a random sample of tracts drawn with a fixed seed",
    "n": 20000,
    "nUnit": "tracts",
    "note": "",
    "period": "ACS 2019-2023, 2020 land area",
    "population": "a random sample of census tracts in the typology",
    "source": "acs",
    "unit": "silhouette (-1 to 1)",
    "value": 0.189672,
    "weights": "none (each tract counts once)"
  },
  "sil_margin_max": {
    "display": "0.08",
    "estimand": "largest difference, over fits with 2 to 10 types, between the mean silhouette of the tracts and that of the simulated data with no clusters",
    "n": 20000,
    "nUnit": "tracts",
    "note": "",
    "period": "ACS 2019-2023, 2020 land area",
    "population": "a random sample of census tracts in the typology",
    "source": "acs",
    "unit": "silhouette (-1 to 1)",
    "value": 0.0803723,
    "weights": "none (each tract counts once)"
  },
  "sil_neg_share": {
    "display": "6.6%",
    "estimand": "share of sampled tracts with a negative silhouette (nearer to another type than to their own)",
    "n": 20000,
    "nUnit": "tracts",
    "note": "",
    "period": "ACS 2019-2023, 2020 land area",
    "population": "a random sample of census tracts in the typology",
    "source": "acs",
    "unit": "percent of sampled tracts",
    "value": 6.645,
    "weights": "none (each tract counts once)"
  },
  "sil_sample": {
    "display": "20,000",
    "estimand": "size of the random sample of tracts, drawn with a fixed seed, on which the silhouettes are computed",
    "n": 81343,
    "nUnit": "tracts",
    "note": "",
    "period": "ACS 2019-2023, 2020 land area",
    "population": "census tracts in the typology",
    "source": "acs",
    "unit": "tracts",
    "value": 20000,
    "weights": "none (sample size)"
  },
  "ss_between": {
    "display": "62.8%",
    "estimand": "share of total variance of the standardized inputs that lies between the eight types",
    "n": 81343,
    "nUnit": "tracts",
    "note": "",
    "period": "ACS 2019-2023, 2020 land area",
    "population": "census tracts in the typology",
    "source": "acs",
    "unit": "percent of the total variance of the standardized inputs",
    "value": 62.7829,
    "weights": "none (each tract counts once)"
  },
  "ss_between_gauss": {
    "display": "56.3%",
    "estimand": "share of variance between eight k-means groups in simulated data with no clusters (multivariate normal with the correlations of the inputs)",
    "n": 81343,
    "nUnit": "tracts",
    "note": "",
    "period": "ACS 2019-2023, 2020 land area",
    "population": "census tracts in the typology",
    "source": "acs",
    "unit": "percent of the total variance of the standardized inputs",
    "value": 56.3302,
    "weights": "none (each tract counts once)"
  },
  "ss_within": {
    "display": "37.2%",
    "estimand": "share of total variance of the standardized inputs that lies within the eight types",
    "n": 81343,
    "nUnit": "tracts",
    "note": "",
    "period": "ACS 2019-2023, 2020 land area",
    "population": "census tracts in the typology",
    "source": "acs",
    "unit": "percent of the total variance of the standardized inputs",
    "value": 37.2171,
    "weights": "none (each tract counts once)"
  },
  "t1_blk": {
    "ci": [
      4.3,
      5.7
    ],
    "ciLevel": 0.95,
    "display": "5.0%",
    "estimand": "population-weighted mean of the tract Black share over the tracts of the type, bootstrap interval over counties",
    "n": 10661,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 1 (High-income owners) that have the measure",
    "source": "acs",
    "unit": "percent of residents who are Black alone, Hispanic residents included",
    "value": 4.97551,
    "weights": "ACS 2019-2023 tract population"
  },
  "t1_col": {
    "ci": [
      62.5,
      64.1
    ],
    "ciLevel": 0.95,
    "display": "63.4%",
    "estimand": "population-weighted mean of the tract college share over the tracts of the type, bootstrap interval over counties",
    "n": 10661,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 1 (High-income owners) that have the measure",
    "source": "acs",
    "unit": "percent of adults 25 and over with a bachelor's degree or more",
    "value": 63.3661,
    "weights": "ACS 2019-2023 tract population"
  },
  "t1_diab": {
    "ci": [
      9.2,
      9.5
    ],
    "ciLevel": 0.95,
    "display": "9.4%",
    "estimand": "population-weighted mean of the tract diabetes rate over the tracts of the type, bootstrap interval over counties",
    "n": 10660,
    "nUnit": "tracts",
    "note": "",
    "period": "PLACES 2024 release, BRFSS 2022",
    "population": "residents of the tracts of type 1 (High-income owners) that have the measure",
    "source": "places",
    "unit": "percent of adults with diabetes (modeled)",
    "value": 9.35008,
    "weights": "ACS 2019-2023 tract population"
  },
  "t1_his": {
    "ci": [
      8.7,
      10.5
    ],
    "ciLevel": 0.95,
    "display": "9.6%",
    "estimand": "population-weighted mean of the tract Hispanic share over the tracts of the type, bootstrap interval over counties",
    "n": 10661,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 1 (High-income owners) that have the measure",
    "source": "acs",
    "unit": "percent of residents who are Hispanic of any race",
    "value": 9.55617,
    "weights": "ACS 2019-2023 tract population"
  },
  "t1_income": {
    "ci": [
      153,
      160
    ],
    "ciLevel": 0.95,
    "display": "157",
    "estimand": "population-weighted mean of the tract tract median household income over the tracts of the type, bootstrap interval over counties",
    "n": 10661,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 1 (High-income owners) that have the measure",
    "source": "acs",
    "unit": "thousands of dollars of tract median household income",
    "value": 156.574,
    "weights": "ACS 2019-2023 tract population"
  },
  "t1_jail": {
    "ci": [
      1.2,
      1.4
    ],
    "ciLevel": 0.95,
    "display": "1.3%",
    "estimand": "population-weighted mean of the tract incarceration share over the tracts of the type, bootstrap interval over counties",
    "n": 10648,
    "nUnit": "tracts",
    "note": "",
    "period": "children born 1978 to 1983, incarceration on April 1, 2010",
    "population": "residents of the tracts of type 1 (High-income owners) that have the measure",
    "source": "opportunity-atlas",
    "unit": "percent of children raised in low-income families incarcerated on Census Day 2010",
    "value": 1.26384,
    "weights": "ACS 2019-2023 tract population"
  },
  "t1_le": {
    "ci": [
      81.9,
      82.3
    ],
    "ciLevel": 0.95,
    "display": "82.1",
    "estimand": "population-weighted mean of the tract life expectancy over the tracts of the type, bootstrap interval over counties",
    "n": 10184,
    "nUnit": "tracts",
    "note": "",
    "period": "deaths in 2010 to 2015",
    "population": "residents of the tracts of type 1 (High-income owners) that have the measure",
    "source": "usaleep",
    "unit": "years of life expectancy at birth",
    "value": 82.1319,
    "weights": "ACS 2019-2023 tract population"
  },
  "t1_own": {
    "ci": [
      83,
      84.7
    ],
    "ciLevel": 0.95,
    "display": "83.8%",
    "estimand": "population-weighted mean of the tract homeownership rate over the tracts of the type, bootstrap interval over counties",
    "n": 10661,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 1 (High-income owners) that have the measure",
    "source": "acs",
    "unit": "percent of occupied homes that are owner-occupied",
    "value": 83.8113,
    "weights": "ACS 2019-2023 tract population"
  },
  "t1_pop": {
    "display": "48.5 million",
    "estimand": "sum of ACS 2019-2023 tract population over the tracts of the type",
    "n": 10661,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 1 (High-income owners)",
    "source": "acs",
    "unit": "residents",
    "value": 48490772,
    "weights": "none (full count of estimates)"
  },
  "t1_pov": {
    "ci": [
      3.9,
      4.1
    ],
    "ciLevel": 0.95,
    "display": "4.0%",
    "estimand": "population-weighted mean of the tract poverty rate over the tracts of the type, bootstrap interval over counties",
    "n": 10661,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 1 (High-income owners) that have the measure",
    "source": "acs",
    "unit": "percent of residents below the poverty line",
    "value": 4.01804,
    "weights": "ACS 2019-2023 tract population"
  },
  "t1_teen": {
    "ci": [
      13.1,
      14.7
    ],
    "ciLevel": 0.95,
    "display": "13.9%",
    "estimand": "population-weighted mean of the tract teen-birth share over the tracts of the type, bootstrap interval over counties",
    "n": 10629,
    "nUnit": "tracts",
    "note": "",
    "period": "children born 1978 to 1983",
    "population": "residents of the tracts of type 1 (High-income owners) that have the measure",
    "source": "opportunity-atlas",
    "unit": "percent of women raised in low-income families who had a teen birth",
    "value": 13.8561,
    "weights": "ACS 2019-2023 tract population"
  },
  "t2_income": {
    "ci": [
      82,
      86
    ],
    "ciLevel": 0.95,
    "display": "84",
    "estimand": "population-weighted mean of the tract tract median household income over the tracts of the type, bootstrap interval over counties",
    "n": 3560,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 2 (Older owners) that have the measure",
    "source": "acs",
    "unit": "thousands of dollars of tract median household income",
    "value": 84.0297,
    "weights": "ACS 2019-2023 tract population"
  },
  "t2_le": {
    "ci": [
      80.1,
      80.6
    ],
    "ciLevel": 0.95,
    "display": "80.4",
    "estimand": "population-weighted mean of the tract life expectancy over the tracts of the type, bootstrap interval over counties",
    "n": 3221,
    "nUnit": "tracts",
    "note": "",
    "period": "deaths in 2010 to 2015",
    "population": "residents of the tracts of type 2 (Older owners) that have the measure",
    "source": "usaleep",
    "unit": "years of life expectancy at birth",
    "value": 80.3621,
    "weights": "ACS 2019-2023 tract population"
  },
  "t2_own": {
    "ci": [
      78,
      79.7
    ],
    "ciLevel": 0.95,
    "display": "78.9%",
    "estimand": "population-weighted mean of the tract homeownership rate over the tracts of the type, bootstrap interval over counties",
    "n": 3560,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 2 (Older owners) that have the measure",
    "source": "acs",
    "unit": "percent of occupied homes that are owner-occupied",
    "value": 78.9362,
    "weights": "ACS 2019-2023 tract population"
  },
  "t2_p65": {
    "ci": [
      40.8,
      43.8
    ],
    "ciLevel": 0.95,
    "display": "42.3%",
    "estimand": "population-weighted mean of the tract share aged 65 and over over the tracts of the type, bootstrap interval over counties",
    "n": 3560,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 2 (Older owners) that have the measure",
    "source": "acs",
    "unit": "percent of residents aged 65 and over",
    "value": 42.2701,
    "weights": "ACS 2019-2023 tract population"
  },
  "t2_pop": {
    "display": "11.3 million",
    "estimand": "sum of ACS 2019-2023 tract population over the tracts of the type",
    "n": 3560,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 2 (Older owners)",
    "source": "acs",
    "unit": "residents",
    "value": 11311639,
    "weights": "none (full count of estimates)"
  },
  "t3_col": {
    "ci": [
      34.9,
      35.7
    ],
    "ciLevel": 0.95,
    "display": "35.3%",
    "estimand": "population-weighted mean of the tract college share over the tracts of the type, bootstrap interval over counties",
    "n": 17400,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 3 (Middle-income owners) that have the measure",
    "source": "acs",
    "unit": "percent of adults 25 and over with a bachelor's degree or more",
    "value": 35.2718,
    "weights": "ACS 2019-2023 tract population"
  },
  "t3_income": {
    "ci": [
      97,
      99
    ],
    "ciLevel": 0.95,
    "display": "98",
    "estimand": "population-weighted mean of the tract tract median household income over the tracts of the type, bootstrap interval over counties",
    "n": 17400,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 3 (Middle-income owners) that have the measure",
    "source": "acs",
    "unit": "thousands of dollars of tract median household income",
    "value": 97.7933,
    "weights": "ACS 2019-2023 tract population"
  },
  "t3_le": {
    "ci": [
      79.5,
      79.7
    ],
    "ciLevel": 0.95,
    "display": "79.6",
    "estimand": "population-weighted mean of the tract life expectancy over the tracts of the type, bootstrap interval over counties",
    "n": 16921,
    "nUnit": "tracts",
    "note": "",
    "period": "deaths in 2010 to 2015",
    "population": "residents of the tracts of type 3 (Middle-income owners) that have the measure",
    "source": "usaleep",
    "unit": "years of life expectancy at birth",
    "value": 79.5982,
    "weights": "ACS 2019-2023 tract population"
  },
  "t3_own": {
    "ci": [
      78.4,
      79.2
    ],
    "ciLevel": 0.95,
    "display": "78.8%",
    "estimand": "population-weighted mean of the tract homeownership rate over the tracts of the type, bootstrap interval over counties",
    "n": 17400,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 3 (Middle-income owners) that have the measure",
    "source": "acs",
    "unit": "percent of occupied homes that are owner-occupied",
    "value": 78.8208,
    "weights": "ACS 2019-2023 tract population"
  },
  "t3_pop": {
    "display": "79.5 million",
    "estimand": "sum of ACS 2019-2023 tract population over the tracts of the type",
    "n": 17400,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 3 (Middle-income owners)",
    "source": "acs",
    "unit": "residents",
    "value": 79474208,
    "weights": "none (full count of estimates)"
  },
  "t4_blk": {
    "ci": [
      5.3,
      6.1
    ],
    "ciLevel": 0.95,
    "display": "5.7%",
    "estimand": "population-weighted mean of the tract Black share over the tracts of the type, bootstrap interval over counties",
    "n": 15491,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 4 (Low-density owners) that have the measure",
    "source": "acs",
    "unit": "percent of residents who are Black alone, Hispanic residents included",
    "value": 5.69521,
    "weights": "ACS 2019-2023 tract population"
  },
  "t4_dens": {
    "ci": [
      53,
      57
    ],
    "ciLevel": 0.95,
    "display": "55",
    "estimand": "population-weighted geometric mean of tract density (exponential of the weighted mean of log density), bootstrap interval over counties",
    "n": 15491,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023 population, 2020 land area",
    "population": "residents of the tracts of type 4 (Low-density owners)",
    "source": "acs",
    "unit": "residents per square mile of land",
    "value": 55.3264,
    "weights": "ACS 2019-2023 tract population"
  },
  "t4_his": {
    "ci": [
      7.6,
      8.7
    ],
    "ciLevel": 0.95,
    "display": "8.1%",
    "estimand": "population-weighted mean of the tract Hispanic share over the tracts of the type, bootstrap interval over counties",
    "n": 15491,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 4 (Low-density owners) that have the measure",
    "source": "acs",
    "unit": "percent of residents who are Hispanic of any race",
    "value": 8.13041,
    "weights": "ACS 2019-2023 tract population"
  },
  "t4_income": {
    "ci": [
      67,
      68
    ],
    "ciLevel": 0.95,
    "display": "68",
    "estimand": "population-weighted mean of the tract tract median household income over the tracts of the type, bootstrap interval over counties",
    "n": 15491,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 4 (Low-density owners) that have the measure",
    "source": "acs",
    "unit": "thousands of dollars of tract median household income",
    "value": 67.53,
    "weights": "ACS 2019-2023 tract population"
  },
  "t4_le": {
    "ci": [
      77.7,
      77.9
    ],
    "ciLevel": 0.95,
    "display": "77.8",
    "estimand": "population-weighted mean of the tract life expectancy over the tracts of the type, bootstrap interval over counties",
    "n": 15201,
    "nUnit": "tracts",
    "note": "",
    "period": "deaths in 2010 to 2015",
    "population": "residents of the tracts of type 4 (Low-density owners) that have the measure",
    "source": "usaleep",
    "unit": "years of life expectancy at birth",
    "value": 77.8136,
    "weights": "ACS 2019-2023 tract population"
  },
  "t4_own": {
    "ci": [
      79.9,
      80.3
    ],
    "ciLevel": 0.95,
    "display": "80.1%",
    "estimand": "population-weighted mean of the tract homeownership rate over the tracts of the type, bootstrap interval over counties",
    "n": 15491,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 4 (Low-density owners) that have the measure",
    "source": "acs",
    "unit": "percent of occupied homes that are owner-occupied",
    "value": 80.0832,
    "weights": "ACS 2019-2023 tract population"
  },
  "t4_pop": {
    "display": "52.3 million",
    "estimand": "sum of ACS 2019-2023 tract population over the tracts of the type",
    "n": 15491,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 4 (Low-density owners)",
    "source": "acs",
    "unit": "residents",
    "value": 52324049,
    "weights": "none (full count of estimates)"
  },
  "t5_col": {
    "ci": [
      54.9,
      58.3
    ],
    "ciLevel": 0.95,
    "display": "56.6%",
    "estimand": "population-weighted mean of the tract college share over the tracts of the type, bootstrap interval over counties",
    "n": 7720,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 5 (Dense, college-educated renters) that have the measure",
    "source": "acs",
    "unit": "percent of adults 25 and over with a bachelor's degree or more",
    "value": 56.5616,
    "weights": "ACS 2019-2023 tract population"
  },
  "t5_dens": {
    "ci": [
      6403,
      11073
    ],
    "ciLevel": 0.95,
    "display": "8,616",
    "estimand": "population-weighted geometric mean of tract density (exponential of the weighted mean of log density), bootstrap interval over counties",
    "n": 7720,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023 population, 2020 land area",
    "population": "residents of the tracts of type 5 (Dense, college-educated renters)",
    "source": "acs",
    "unit": "residents per square mile of land",
    "value": 8616.26,
    "weights": "ACS 2019-2023 tract population"
  },
  "t5_diab": {
    "ci": [
      8.4,
      9
    ],
    "ciLevel": 0.95,
    "display": "8.7%",
    "estimand": "population-weighted mean of the tract diabetes rate over the tracts of the type, bootstrap interval over counties",
    "n": 7719,
    "nUnit": "tracts",
    "note": "",
    "period": "PLACES 2024 release, BRFSS 2022",
    "population": "residents of the tracts of type 5 (Dense, college-educated renters) that have the measure",
    "source": "places",
    "unit": "percent of adults with diabetes (modeled)",
    "value": 8.73947,
    "weights": "ACS 2019-2023 tract population"
  },
  "t5_le": {
    "ci": [
      79.9,
      80.6
    ],
    "ciLevel": 0.95,
    "display": "80.3",
    "estimand": "population-weighted mean of the tract life expectancy over the tracts of the type, bootstrap interval over counties",
    "n": 6980,
    "nUnit": "tracts",
    "note": "",
    "period": "deaths in 2010 to 2015",
    "population": "residents of the tracts of type 5 (Dense, college-educated renters) that have the measure",
    "source": "usaleep",
    "unit": "years of life expectancy at birth",
    "value": 80.305,
    "weights": "ACS 2019-2023 tract population"
  },
  "t5_own": {
    "ci": [
      34.6,
      37.7
    ],
    "ciLevel": 0.95,
    "display": "36.1%",
    "estimand": "population-weighted mean of the tract homeownership rate over the tracts of the type, bootstrap interval over counties",
    "n": 7720,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 5 (Dense, college-educated renters) that have the measure",
    "source": "acs",
    "unit": "percent of occupied homes that are owner-occupied",
    "value": 36.0915,
    "weights": "ACS 2019-2023 tract population"
  },
  "t5_pop": {
    "display": "29.8 million",
    "estimand": "sum of ACS 2019-2023 tract population over the tracts of the type",
    "n": 7720,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 5 (Dense, college-educated renters)",
    "source": "acs",
    "unit": "residents",
    "value": 29751491,
    "weights": "none (full count of estimates)"
  },
  "t5_t4_le_gap": {
    "ci": [
      2.1,
      2.8
    ],
    "ciLevel": 0.95,
    "display": "2.5",
    "estimand": "difference between the population-weighted mean life expectancy of type 5 minus type 4 (Dense, college-educated renters minus Low-density owners), bootstrap interval over counties with shared draws",
    "n": 22181,
    "nUnit": "tracts",
    "note": "",
    "period": "deaths in 2010 to 2015",
    "population": "residents of the tracts of types 5 and 4 that have a life expectancy",
    "source": "usaleep",
    "unit": "years of life expectancy at birth",
    "value": 2.49139,
    "weights": "ACS 2019-2023 tract population"
  },
  "t6_his": {
    "ci": [
      27.8,
      36.1
    ],
    "ciLevel": 0.95,
    "display": "32.0%",
    "estimand": "population-weighted mean of the tract Hispanic share over the tracts of the type, bootstrap interval over counties",
    "n": 14865,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 6 (Moderate-income, mixed-tenure) that have the measure",
    "source": "acs",
    "unit": "percent of residents who are Hispanic of any race",
    "value": 31.9546,
    "weights": "ACS 2019-2023 tract population"
  },
  "t6_income": {
    "ci": [
      67,
      69
    ],
    "ciLevel": 0.95,
    "display": "68",
    "estimand": "population-weighted mean of the tract tract median household income over the tracts of the type, bootstrap interval over counties",
    "n": 14865,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 6 (Moderate-income, mixed-tenure) that have the measure",
    "source": "acs",
    "unit": "thousands of dollars of tract median household income",
    "value": 68.0922,
    "weights": "ACS 2019-2023 tract population"
  },
  "t6_le": {
    "ci": [
      77.1,
      77.6
    ],
    "ciLevel": 0.95,
    "display": "77.3",
    "estimand": "population-weighted mean of the tract life expectancy over the tracts of the type, bootstrap interval over counties",
    "n": 14393,
    "nUnit": "tracts",
    "note": "",
    "period": "deaths in 2010 to 2015",
    "population": "residents of the tracts of type 6 (Moderate-income, mixed-tenure) that have the measure",
    "source": "usaleep",
    "unit": "years of life expectancy at birth",
    "value": 77.328,
    "weights": "ACS 2019-2023 tract population"
  },
  "t6_own": {
    "ci": [
      56.6,
      58.7
    ],
    "ciLevel": 0.95,
    "display": "57.7%",
    "estimand": "population-weighted mean of the tract homeownership rate over the tracts of the type, bootstrap interval over counties",
    "n": 14865,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 6 (Moderate-income, mixed-tenure) that have the measure",
    "source": "acs",
    "unit": "percent of occupied homes that are owner-occupied",
    "value": 57.6842,
    "weights": "ACS 2019-2023 tract population"
  },
  "t6_pop": {
    "display": "63.3 million",
    "estimand": "sum of ACS 2019-2023 tract population over the tracts of the type",
    "n": 14865,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 6 (Moderate-income, mixed-tenure)",
    "source": "acs",
    "unit": "residents",
    "value": 63332072,
    "weights": "none (full count of estimates)"
  },
  "t6_pov": {
    "ci": [
      14.3,
      14.6
    ],
    "ciLevel": 0.95,
    "display": "14.5%",
    "estimand": "population-weighted mean of the tract poverty rate over the tracts of the type, bootstrap interval over counties",
    "n": 14865,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 6 (Moderate-income, mixed-tenure) that have the measure",
    "source": "acs",
    "unit": "percent of residents below the poverty line",
    "value": 14.4582,
    "weights": "ACS 2019-2023 tract population"
  },
  "t7_col": {
    "ci": [
      20.9,
      22.5
    ],
    "ciLevel": 0.95,
    "display": "21.7%",
    "estimand": "population-weighted mean of the tract college share over the tracts of the type, bootstrap interval over counties",
    "n": 6759,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 7 (Lower-income renters) that have the measure",
    "source": "acs",
    "unit": "percent of adults 25 and over with a bachelor's degree or more",
    "value": 21.695,
    "weights": "ACS 2019-2023 tract population"
  },
  "t7_le": {
    "ci": [
      74.9,
      75.8
    ],
    "ciLevel": 0.95,
    "display": "75.3",
    "estimand": "population-weighted mean of the tract life expectancy over the tracts of the type, bootstrap interval over counties",
    "n": 6268,
    "nUnit": "tracts",
    "note": "",
    "period": "deaths in 2010 to 2015",
    "population": "residents of the tracts of type 7 (Lower-income renters) that have the measure",
    "source": "usaleep",
    "unit": "years of life expectancy at birth",
    "value": 75.3408,
    "weights": "ACS 2019-2023 tract population"
  },
  "t7_own": {
    "ci": [
      33.6,
      38
    ],
    "ciLevel": 0.95,
    "display": "35.8%",
    "estimand": "population-weighted mean of the tract homeownership rate over the tracts of the type, bootstrap interval over counties",
    "n": 6759,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 7 (Lower-income renters) that have the measure",
    "source": "acs",
    "unit": "percent of occupied homes that are owner-occupied",
    "value": 35.8203,
    "weights": "ACS 2019-2023 tract population"
  },
  "t7_pop": {
    "display": "22.7 million",
    "estimand": "sum of ACS 2019-2023 tract population over the tracts of the type",
    "n": 6759,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 7 (Lower-income renters)",
    "source": "acs",
    "unit": "residents",
    "value": 22670548,
    "weights": "none (full count of estimates)"
  },
  "t7_pov": {
    "ci": [
      29.3,
      30.4
    ],
    "ciLevel": 0.95,
    "display": "29.8%",
    "estimand": "population-weighted mean of the tract poverty rate over the tracts of the type, bootstrap interval over counties",
    "n": 6759,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 7 (Lower-income renters) that have the measure",
    "source": "acs",
    "unit": "percent of residents below the poverty line",
    "value": 29.8299,
    "weights": "ACS 2019-2023 tract population"
  },
  "t7_sp": {
    "ci": [
      10.1,
      10.6
    ],
    "ciLevel": 0.95,
    "display": "10.3%",
    "estimand": "population-weighted mean of the tract single-parent share over the tracts of the type, bootstrap interval over counties",
    "n": 6759,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 7 (Lower-income renters) that have the measure",
    "source": "acs",
    "unit": "percent of households that are single-parent households",
    "value": 10.3457,
    "weights": "ACS 2019-2023 tract population"
  },
  "t8_blk": {
    "ci": [
      30.9,
      39.6
    ],
    "ciLevel": 0.95,
    "display": "35.2%",
    "estimand": "population-weighted mean of the tract Black share over the tracts of the type, bootstrap interval over counties",
    "n": 4887,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 8 (High-poverty, single-parent) that have the measure",
    "source": "acs",
    "unit": "percent of residents who are Black alone, Hispanic residents included",
    "value": 35.1786,
    "weights": "ACS 2019-2023 tract population"
  },
  "t8_col": {
    "ci": [
      13.1,
      14.3
    ],
    "ciLevel": 0.95,
    "display": "13.7%",
    "estimand": "population-weighted mean of the tract college share over the tracts of the type, bootstrap interval over counties",
    "n": 4887,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 8 (High-poverty, single-parent) that have the measure",
    "source": "acs",
    "unit": "percent of adults 25 and over with a bachelor's degree or more",
    "value": 13.6901,
    "weights": "ACS 2019-2023 tract population"
  },
  "t8_his": {
    "ci": [
      32.6,
      44
    ],
    "ciLevel": 0.95,
    "display": "38.3%",
    "estimand": "population-weighted mean of the tract Hispanic share over the tracts of the type, bootstrap interval over counties",
    "n": 4887,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 8 (High-poverty, single-parent) that have the measure",
    "source": "acs",
    "unit": "percent of residents who are Hispanic of any race",
    "value": 38.3363,
    "weights": "ACS 2019-2023 tract population"
  },
  "t8_jail": {
    "ci": [
      3.3,
      3.8
    ],
    "ciLevel": 0.95,
    "display": "3.5%",
    "estimand": "population-weighted mean of the tract incarceration share over the tracts of the type, bootstrap interval over counties",
    "n": 4884,
    "nUnit": "tracts",
    "note": "",
    "period": "children born 1978 to 1983, incarceration on April 1, 2010",
    "population": "residents of the tracts of type 8 (High-poverty, single-parent) that have the measure",
    "source": "opportunity-atlas",
    "unit": "percent of children raised in low-income families incarcerated on Census Day 2010",
    "value": 3.54209,
    "weights": "ACS 2019-2023 tract population"
  },
  "t8_le": {
    "ci": [
      74.2,
      75.1
    ],
    "ciLevel": 0.95,
    "display": "74.7",
    "estimand": "population-weighted mean of the tract life expectancy over the tracts of the type, bootstrap interval over counties",
    "n": 4595,
    "nUnit": "tracts",
    "note": "",
    "period": "deaths in 2010 to 2015",
    "population": "residents of the tracts of type 8 (High-poverty, single-parent) that have the measure",
    "source": "usaleep",
    "unit": "years of life expectancy at birth",
    "value": 74.6691,
    "weights": "ACS 2019-2023 tract population"
  },
  "t8_own": {
    "ci": [
      32.5,
      37.9
    ],
    "ciLevel": 0.95,
    "display": "35.2%",
    "estimand": "population-weighted mean of the tract homeownership rate over the tracts of the type, bootstrap interval over counties",
    "n": 4887,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 8 (High-poverty, single-parent) that have the measure",
    "source": "acs",
    "unit": "percent of occupied homes that are owner-occupied",
    "value": 35.2163,
    "weights": "ACS 2019-2023 tract population"
  },
  "t8_pop": {
    "display": "17.3 million",
    "estimand": "sum of ACS 2019-2023 tract population over the tracts of the type",
    "n": 4887,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 8 (High-poverty, single-parent)",
    "source": "acs",
    "unit": "residents",
    "value": 17296288,
    "weights": "none (full count of estimates)"
  },
  "t8_pov": {
    "ci": [
      31.7,
      33.2
    ],
    "ciLevel": 0.95,
    "display": "32.4%",
    "estimand": "population-weighted mean of the tract poverty rate over the tracts of the type, bootstrap interval over counties",
    "n": 4887,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 8 (High-poverty, single-parent) that have the measure",
    "source": "acs",
    "unit": "percent of residents below the poverty line",
    "value": 32.4311,
    "weights": "ACS 2019-2023 tract population"
  },
  "t8_sp": {
    "ci": [
      24.6,
      25.3
    ],
    "ciLevel": 0.95,
    "display": "24.9%",
    "estimand": "population-weighted mean of the tract single-parent share over the tracts of the type, bootstrap interval over counties",
    "n": 4887,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of type 8 (High-poverty, single-parent) that have the measure",
    "source": "acs",
    "unit": "percent of households that are single-parent households",
    "value": 24.8988,
    "weights": "ACS 2019-2023 tract population"
  },
  "t8_teen": {
    "ci": [
      37.8,
      40
    ],
    "ciLevel": 0.95,
    "display": "38.9%",
    "estimand": "population-weighted mean of the tract teen-birth share over the tracts of the type, bootstrap interval over counties",
    "n": 4883,
    "nUnit": "tracts",
    "note": "",
    "period": "children born 1978 to 1983",
    "population": "residents of the tracts of type 8 (High-poverty, single-parent) that have the measure",
    "source": "opportunity-atlas",
    "unit": "percent of women raised in low-income families who had a teen birth",
    "value": 38.8648,
    "weights": "ACS 2019-2023 tract population"
  },
  "total_pop": {
    "display": "324.7 million",
    "estimand": "sum of ACS 2019-2023 tract population over the tracts in the typology",
    "n": 81343,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts in the typology",
    "source": "acs",
    "unit": "residents",
    "value": 324651067,
    "weights": "none (full count of estimates)"
  },
  "type_share_min": {
    "display": "10%",
    "estimand": "definition: a type is present in a county when it holds at least this share of the typed residents",
    "note": "",
    "period": "2019-2023",
    "population": "counties",
    "source": "acs",
    "unit": "percent of a county's typed residents",
    "value": 10,
    "weights": "none (definition)"
  },
  "typed_blk": {
    "display": "11.9%",
    "estimand": "population-weighted mean of the tract Black share over the tracts in the typology",
    "n": 81343,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts in the typology that have the measure",
    "source": "acs",
    "unit": "percent of residents who are Black alone, Hispanic residents included",
    "value": 11.854,
    "weights": "ACS 2019-2023 tract population"
  },
  "typed_pov": {
    "display": "12.3%",
    "estimand": "population-weighted mean of the tract poverty rate over the tracts in the typology",
    "n": 81343,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts in the typology that have the measure",
    "source": "acs",
    "unit": "percent of residents below the poverty line",
    "value": 12.3356,
    "weights": "ACS 2019-2023 tract population"
  },
  "untyped_blk": {
    "display": "19.4%",
    "estimand": "population-weighted mean of the tract Black share over the tracts not in the typology",
    "n": 2268,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts not in the typology that have the measure",
    "source": "acs",
    "unit": "percent of residents who are Black alone, Hispanic residents included",
    "value": 19.4469,
    "weights": "ACS 2019-2023 tract population"
  },
  "untyped_no_le": {
    "display": "39%",
    "estimand": "share of the tracts not in the typology that have no USALEEP life expectancy estimate",
    "n": 3072,
    "nUnit": "tracts",
    "note": "",
    "period": "deaths in 2010 to 2015",
    "population": "census tracts of the 50 states and DC that are not in the typology",
    "source": "usaleep",
    "unit": "percent of tracts",
    "value": 39.3555,
    "weights": "none (each tract counts once)"
  },
  "untyped_pop": {
    "display": "7.7 million",
    "estimand": "sum of ACS 2019-2023 tract population over the tracts not in the typology",
    "n": 3072,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts of the 50 states and DC that are not in the typology",
    "source": "acs",
    "unit": "residents",
    "value": 7653273,
    "weights": "none (full count of estimates)"
  },
  "untyped_pov": {
    "display": "25.8%",
    "estimand": "population-weighted mean of the tract poverty rate over the tracts not in the typology",
    "n": 2078,
    "nUnit": "tracts",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the tracts not in the typology that have the measure",
    "source": "acs",
    "unit": "percent of residents below the poverty line",
    "value": 25.8316,
    "weights": "ACS 2019-2023 tract population"
  }
}