The Census Bureau serves as the leading source of quality data about the nation's people and economy. A nationwide population census on a regular basis dates from the establishment of Article I, Section 2, of the United States Constitution.
The Census Bureau has released the 1940 Census. Besides genealogy information, the 1940 Census has economic and social data for this time period.
Census Reporter is a Knight News Challenge-funded project to make it easy for journalists to write stories using US Census data. Expanding upon the volunteer-built Census.ire.org, Census Reporter simplifies finding and using data from the decennial census and the American Community Survey.
California Data Easy to use site that has data from state agencies. Recommended as a starting site for researching data on California
California Crime Statistics - gives historical as well as current statistics on crime in general and by types of crimes.
California Economy & Labor Statistics - The US Bureau of Labor Statistics and the California Department of Industrial Relations give information on consumer price index, employment figures, wages, etc.
California Education - the state database DataQuest is an interactive resource that gives reports for accountability (e.g. API, AYP), test data, enrollment, graduates, dropouts, course enrollments, staffing, and data regarding English learners.
United Nations. Department of Economic and Social Affairs - United Nations database provides world demographic information.
The World Bank offers free access to statistics involving, by country, education, business & economics, health, agriculture, etc. These and other statistics offered by the World Bank show the development in specific countries.
UNICEF gives country statistics on children's issues, such as health, education, and risk factors related to children.