The tracts that stand out.
The Census Bureau divides the country into 84,000+ small, stable neighborhoods called tracts, each with 1,200 to 8,000 residents. Here are the ones at the extremes.
Where the most people live inside a single tract boundary.
Highest residents per square mile. Manhattan dominates.
Median household income, latest ACS 5-year.
Median value of owner-occupied homes.
Share of adults 25+ with a bachelor's degree or higher.
Smallest share of residents below the poverty line.
Every list, with state breakdowns
24 rankings across the full ACS, each one available nationally and filtered to any of the 50 states.
All numbers come from the latest Census Bureau ACS 5-year release for each tract. Tract boundaries follow the 2024 TIGER/Line vintage. Population-based lists exclude tracts under 1,000 residents to filter out airports, parks, and industrial zones with statistical noise.
Open the interactive tract map → or browse city + county + metro rankings.