The New York Times has made an interactive 2010 U.S. census map [1] available. You can view population data for individual counties or view the data by state.

The New York Times has made an interactive 2010 U.S. census map [1] available. You can view population data for individual counties or view the data by state.
Links:
[1] http://projects.nytimes.com/census/2010/map
[2] http://www.rcap.org/taxonomy/term/91
[3] http://www.rcap.org/taxonomy/term/292
[4] http://www.rcap.org/taxonomy/term/350