Government Information Census
- American Factfinder
- Population and housing data from the 2000 Census, as well as links to the 1997 Economic Census data
- United States Historical Census Browser
- State and county level data from the Decennial censuses from 1790-1960
- Quick census data:
- Census 2000 data
- 1990 Census data
- 1980-1990 trend changes for cities
- Population Reference Bureau
- Reports on U.S. and international population trends and related issues such as mortality and diseases