US Census Bureau

American Factfinder

ICPSR Census 2000

Population Studies Center (University of Michigan) (FTP)

Census Scope Ameristat

Center for Geographic Information (State of Michigan)

University of Michigan Documents Center

Reporting Census 2000: A Guide for Journalists (Cronkite School of Journalism, Arizona State University)

United States Historical Census Data Browser (University of Virginia Geospatial and Statistical Data Center)

Integrated Public Use Microdata (Minnesota Population Center at the University of Minnesota)

Socioeconomic Data and Applications Center

William Frey

Pennsylvania State Data Center (Penn State)

Fed Stats

Exploring the US Census (University of Chicago)

1970 through 2000 Census Tract Data (Geolytics)

Industry and Occupation Classification System