- Social Explorer
Make reports and download demographic data tables from 1940 to 2010. Create maps in an easy-to-use interface (see their how-to videos). Maps can be exported as PowerPoint presentations or as images. GIS users: see the instructions below for help using this data in ArcMap.
- The National Historical Geographic Information System (NHGIS)
Over 12,000 aggregate census tables and 430 GIS shapefiles spanning the entire United States from 1790 to 2010, available for free download.
- iPUMS
Huge collection of U.S. and international public use microdata samples (PUMS) files from recent and historical censuses and other surveys.
- Census Map Services from ArcGIS
Open these map services directly in ArcGIS desktop software or in ArcGIS Explorer Online.
- ArcGIS Explorer Online
Web-based mapping application useful for viewing Census map services from ArcGIS Online.