Demographics & Society
Population change, migration, family structure, and the social fabric — the long-run shifts beneath the headlines.
9 pieces
BlogNewLake Wobegon High — Fifty Years of Grade Inflation in American High Schools
In Garrison Keillor’s fictional town, all the children are above average. In actual American high schools, they are now mostly A students: the share of seniors reporting an A average has more than doubled since 1976, while truancy hasn’t…
BlogNewThe Great Withdrawal — How American Teens Stopped Dating, Working, Drinking, and Going Out
Dating. Going out at night. The after-school job. The first beer. The first everything. Across fifty years of surveys, every classic marker of teenage social life is in retreat at once — most of them starting their slide around 2010, non…
BlogFifty Years of American Evenings
Since 1974 the GSS has asked the same four questions: how often do you spend an evening with relatives, with friends, with neighbors — or at a bar? The answers trace a half-century in which company grew rarer, screens grew brighter, and…
TeachingLottery ZIP Psychographics: How Neighborhoods Play
Segment active NYC ZIP codes from NY Lottery behavior signals, then interpret the PCA/factor score space with borough, income, retailer availability, and product-mix profiles.
BlogReading Is a Girls' Country
Across 12,360 school districts, girls out-read boys in 99.9 percent. Math is contested ground — and which side wins tracks the district
BlogThe Eight Americas
A k-means clustering of 81,000 census tracts sorts the country into eight kinds of neighborhood — and a child
BlogThe Vanishing Cradle
America
ZIP psychographic baseline parquet
ZIP-level baseline psychographic or latent-factor data stored as parquet.
County demographics parquet
County-level demographic parquet dataset paired with a local county demographics JSON file.