The Census Bureau stopped releasing new data in American FactFinder (AFF) at the end of June 2019 and transitioned to data.census.gov for data releases formerly on AFF. AFF will remain as an archive system for data and functionality that are not yet available in data.census.gov until March 31, 2020. After March 31, 2020, our American FactFinder will be decommissioned and no longer available.
The Congressional Research Service provides detailed information to Congress on a wide range of issues, most of them packed with statistics. No web site has all of them, but UNT collects a good number of them.
U.S. Census data reflects the demographic make-up of the U.S., with figures on family size and structure, income, health insurance coverage, and much, much more.
Snapshot of demographic, economic and housing statistics for all 50 states and for individual cities. The site also generates maps of the statistical data.
Stats about American cities: residents (race, income, ancestries, education, employment...), geographical data, state profiles, crime data, cost of living...etc. Careful - this site does not always list the sources of its data.
Data is available on a wide variety of demographic information, in spreadsheet formats, on race, income, housing, building permits, employment, transportation, etc. plus links to labor force, per capita income, population and regional consumer price index information.
Statistical Abstract of the United States, 2016
Historical Statistics of the United States: Earliest Times to the Present by