data.census.govdata.census.gov is an online source for accessing population, housing, economic and geographic data from the U.S. Census Bureau. Users can create thematic maps from the table view of a product. For more information, please read More information section.
To creata a map, user must select at least 2 like geopgraphies (e.g. 2 or more states, or 2 or more counties) to map. Creat a Map tutorial is as follows: http://factfinder2.census.gov/help/en/tutorials/createmap_tut.htm.