* UC Irvine access only
Guide to Census data
Last Updated: May 11, 2015
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.
The Census Bureau's mission is to serve as the leading source of quality data about the nation's people and economy.
"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 Community Survey
The American Community Survey (ACS) is an ongoing survey that provides data every year -- giving communities the current information they need to plan investments and services. Information from the survey generates data that help determine how more than $400 billion in federal and state funds are distributed each year.
- American Factfinder
American FactFinder provides access to data about the United States, Puerto Rico and the Island Areas. The data in American FactFinder come from several censuses and surveys.
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.
- 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.
- Rand State Statistics
RAND California contains these 90 databases plus about 80 detailed databases on California. RAND State Statistics contains nearly 400 Social Science databases and is made up of four sites, each with a specific geographic focus.
- 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...