Census Data and Research Links

U.S. Census Bureau
http://www.census.gov/

American FactFinder
Your source for population, housing, economic, and geographic data from the United States Census Bureau.
http://factfinder.census.gov/home/saff/main.html?_lang=en

Census 2000
http://www.census.gov/main/www/cen2000.html

Historical Census Data
Maintained by the University of Virginia , this site provides census data from 1790 to 1960.http://fisher.lib.virginia.edu/collections/stats/histcensus/index.html

Integrated Public Use Microdata Series (IPUMS)
Maintained by the Minnesota Population Center at the University of Minnesota , IPUMS-USA is a coherent national census database spanning 1850-2000 and IPUMS-International is dedicated to collecting and distributing census data from around the world.
http://www.ipums.umn.edu/

Missouri Census Data Center
http://mcdc2.missouri.edu/index.shtml

DataFERRET (Federal Electronic Research and Review Extraction Tool)
This site provides access to common datasets, including the CPS, SIPP, American Housing Survey, Survey of Program Dynamics, and the National Health Interview Survey.
http://dataferrett.census.gov/

FedStats
The gateway to statistics from over 100 U.S. federal agencies. Track economic and population trends, education, health care costs, aviation safety, foreign trade, energy use, farm production, and more. 
http://www.fedstats.gov/