* UC Irvine access only
Guide to Census data
Last Updated: Apr 12, 2013
The U.S. Census counts every resident in the United States. It is mandated by Article I, Section 2 of the Constitution and takes place every 10 years. The data collected by the decennial census determine the number of seats each state has in the U.S. House of Representatives and is also used to distribute billions in federal funds to local communities.
The 2010 Census represented the most massive participation movement ever witnessed in our country. Approximately 74 percent of the households returned their census forms by mail; the remaining households were counted by census workers walking neighborhoods throughout the United States. National and state population totals from the 2010 Census were released on December 21, 2010. Redistricting data, which include additional state, county and local counts, will be released starting in February 2011.
"The actual enumeration shall be made within three years after the first meeting of the Congress of the United States, and within every subsequent term of 10 years, in such manner as they shall by Law direct."
-- Article I, Section 2 of the Constitution of the United States
Your source for population, housing, economic, and geographic information
- American Factfinder
View the 2010 Census Summary File 1 for detailed data on age, sex, households, families, the population in group quarters, and housing units. Also included are counts for many race and Hispanic or Latino categories. Data released on state by state basis.
- Census.gov (United States Census Bureau)
The Census Bureau serves as the leading source of quality data about the nation's people and economy. We honor privacy, protect confidentiality, share our expertise globally, and conduct our work openly. We are guided on this mission by our strong and capable workforce, our readiness to innovate, and our abiding commitment to our customers. The Census site organizes information in the following categories: People; Business; Geography; Data; Newsroom; Subjects A-Z.
- Census 2010 Interactive Population Map
Many of the 2010 Census Demographic Profiles are ready for viewing. These profiles provide more subject detail than the recently released 2010 Census redistricting data files. These profiles provide details about race and Hispanic groups, age, sex and housing status. The profiles will be released on a state-by-state basis for each of the 50 states, the District of Columbia and Puerto Rico. Use this map to explore 2010 Census Demographic Profile data.
- Social Explorer
Social Explorer is an online research tool designed to provide 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 better illustrate, analyze and understand demography and social change. In addition to being a comprehensive data resource, Social Explorer also offers features and tools to meet the needs of both demography experts and novices...