Census Statistics

A nationwide population census is mandated by Article 1, Section 2 of the United States Constitution. The first census began on the first Monday in August 1790. Six basic questions were asked of the populace in the original 13 states, plus the districts of Kentucky, Maine, and Vermont, and the Southwest Territory (Tennessee). There is no evidence of a 1790 census in the Northwest Territory.

The most recent decennial census was taken on April 1, 2010.  The Census Bureau also conducts the American Community Survey annually in order to provide timely updates between the decennial censuses.  The American Community Survey replaces the long form questionnaire that was used in the decennial census, which includes economic, social, education, and other statistics.

The San Francisco Public Library has all the decennial census volumes: 1790 - 2010.  The Census 2000 is the first census for which the Internet site is the primary means of disseminating the data. The data is released first on the Census Bureau's American FactFinder Web site. In addition to formatted tables, the Census Bureau Web site has maps and data sets available for downloading, printing, viewing and manipulating.

The Census Bureau's Web page provides Web access to census data plus all of the Bureau's statistical series, publications, products, and programs.

(updated 9/2017)

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