United States Census Bureau : United States Bureau of the Census home page.
Explore Census Data: A starting point for searching for Census data, visualizations, and more.
American FactFinder : "Your source for population, housing, economic, and geographic data." From the U.S. Census Bureau this system will find and retrieve the information from some of the Census Bureau's largest data sets.
Census 2010 : 2010 Census website. Note: Not all 2010 Census reports have yet been released.
Census 2000 : 2000 Census website.
Census 1990 : 1990 Census website.
Historical Census Reports : Census of Population and Housing 1790 - to the current date. PDF files of selected data available for the 1790-1950 censuses.
Selected Historical Decennial Census Reports : PDF files.