American Fact Finder http://factfinder2.census.gov/faces/nav/jsf/pages/index.xhtml 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. Find popular facts (population, income, etc.) and frequently requested data about your community.
FedStats FedStats provides easy access to statistics and information produced by more than 100 U.S. Federal Government Agencies.
U.S. Bureau of Labor Statistics the Bureau of Labor Statistics in the principal fact finding agency for the Federal Government in the field of labor economics, working conditions, and price changes in the economy