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The United States Census, from 1790 to 2010, is one of the most important and richest collection of data and statistics about American history, culture, society and economy. But there are statistics collected by other organizations and government bodies that will also be useful.
Guides to Census Research: U.S. Census
Describes the scope and contents of every U.S. Census of population, 1790-2000. Links to help you find both the print and online census publications and data available at UCSD
HeritageQuest (US Census, local history texts)
Search or browse U.S. Census forms as filled in by door-to-door census takers, 1790-1930. (Not all years indexed yet.) Also includes 25,000 books of local and family history, genealogy, other documents and index to genealogy and local history periodicals
Historical Statistics of the United States
Comprehensive survey and tabulation of historical statistics from government agencies and other sources, covering all aspects of US population and economy. First revision of the classic 1975 edition. View tables or download as Excel files
iPOLL Databank from the Roper Center
The preeminent database of individual poll questions covering nearly half million questions (and answers) asked in United States public opinion surveys.
Roper Center for Public Opinion Research
An archive of public opinion and survey research. The Search for Datasets includes only those surveys for which the Roper Center holds the datasets (microdata or individual level), with brief descriptions of each. These include national, state, and foreign surveys, as well as special samples such as leaders or youth. iPOLL contains the aggregated question-level results from the US national surveys in the catalog, as well as a great deal of additional survey data from news releases and survey reports. To download data, create a personal account using your ucsd.edu email address while accessing the database from a UC San Diego computer, UCSD-PROTECTED wireless, or the VPN.
1790-2006. This site combines data from the U.S. Census of Population and Housing & the American Community Survey (ACS) with a user friendly interface allowing the creation of maps & statistical tables. Census Tract boundaries are available back to 1940.[
Statistical Abstract of the United States (1878-2012)
The authoritative annual summary of statistics on social, political and economic organization of the United States, gathered by the Census Bureau, Bureau of Labor Statistics, and many other agencies and private sources. Last year available on this website: 2012.