Additional Sources
- data.govCatalog of U.S. Federal data sets and spatial data. Future funding for this source is uncertain.
- National Historical Geographic Information System (NHGIS)Provides, free of charge, aggregate census data and GIS-compatible boundary files for the United States between 1790 and 2000.
- Integrated Public Use Microdata Series (IPUMS-USA)Microdata files of representative samples drawn from the Census and American Community Survey from 1850 to the present.
Accessing Demographic Data from the U.S. Census & ACS
- American FactFinderInteractive database provides ready access to Census statistics about population and housing, at local, state, and national levels. Note "legacy" versus 2010 version.
- Secondary: Social ExplorerSocial Explorer allows users to create maps and generate reports based on demographic data from the United States Census. Note: free and subscription versions available. Data from NHGIS (see link below).
- Secondary: NY Times Mapping America ApplicationBased on ACS 2005-09.