U.S. History

The 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 2013.

Historical Statistics of the United States has long been the standard source for quantitative indicators of American history.

Infoshare Online brings together in one easy-to-use system dozens of local, State, and National databases describing population, health, and socio-economic conditions. Infoshare can give you information on a wide variety of geographic areas, and it allows you to tabulate this data in tables of your own choosing. Any tables you generate can be printed or saved in convenient spreadsheet, text, and database formats.

Polling the Nations is an online database of public opinion polls containing the full text of 600,000+ questions and responses, from 18,000+ surveys and 1,700+ polling organizations, conducted from 1986 through the present in the United States and more than 100 other countries around the world.

Over 600,000 public opinion survey questions

Social Explorer provides quick and easy access to current and historical census data and demographic information. The easy-to-use web interface lets users create maps and reports to illustrate, analyze, and understand demography and social change.

Available data includes:

The entire US Census from 1790 to 2010.
The entire American Community Survey (ACS) from 2005 to 2012.
All annual updates from the American Community Survey.
InfoGroup data on religious congregations in the United States for 2009 and 2010, including maps for counties and special census areas, as well as point maps of the actual congregation locations.
The Religious Congregations and Membership Study (RCMS) from 1980 to 2010.