Stats about all US cities - real estate, relocation information, etc
Demographics of cities in the US ranging from cost of living to radio and TV stations
Provides information collected from the federal government relating social statistics
Several programs at the Bureau of labor Statistics make significant amounts of data available for specific demographic categories.
Current demographics 2008-2013, reports that can be ordered online
Demographics by the zip
Find demographics for specific zip codes and compare to other areas as well.