GIS-Pro 2014 has ended

National Historical GIS

Booth #200
The National Historical Geographic Information System (NHGIS) provides free access to census tables and GIS boundary files for U.S. censuses from 1790 to the present through the www.nhgis.org website. GIS highlights include county and state boundaries since 1790, tract boundaries since 1910, and all standard reporting areas since 1990. Census summary tables are available for all decennial censuses and from the American Community Survey, for all available geographic levels.