Social ExplorerThis link opens in a new windowEasily used interface that contains census data back to 1940.
ProQuest Statistical InsightThis link opens in a new windowProvides abstracts and indexes of statistical information from over 100,000 U.S. government publications from 1973, state and private sources from 1980, and approximately 2000 documents from international organizations from 1983. Incorporates ASI subject and keyword searching. Full text or web links provided for some citations.
IPUMS-USAThis link opens in a new windowIntegrated Public Use MicroData of 38 samples from 15 censuses. Requires registration and knowledge of a statistical package.
Inter-University Consortium for Political and Social Research (ICPSR)This link opens in a new windowThis web page provides search and browsing access to abstracts and data sets in the world's largest archive of computerized social science data. Contains some quick tables and online data analysis. Requires knowledge of a statistical package.