"The 2010 Census represented the most massive participation movement ever witnessed in our country. Approximately 74 percent of the households returned their census forms by mail; the remaining households were counted by census workers walking neighborhoods throughout the United States. National and state population totals from the 2010 Census were released on December 21, 2010. Redistricting data, which include additional state, county and local counts, will be released starting in February 2011."
For further information concerning the 2010 Census please visit: 2010.census.gov/2010census/data/
"What is the Census? - 2010 Census ." 2010 Census. http://2010.census.gov/2010census/about/ (accessed October 18, 2011).