International Censuses

Data.gov

The purpose of Data.gov is to increase public access to high value, machine readable datasets generated by the Executive Branch of the Federal Government. Data.gov includes searchable catalogs that provide access to "raw" datasets and various tools.

IPUMS NHGIS

Contains aggregate census data and GIS files for the U.S. from 1790 to the present. Topics include general population characteristics, economic indicators, buildings, agriculture, and social environment indicators.