Estimates of the Unauthorized Immigrant Population Residing in the United States: January 2011
http://www.dhs.gov/xlibrary/assets/statistics/publications/ois_ill_pe_2011.pdf
Estimates that 11.5 million unauthorized immigrants were living in the U.S. in January 2011, little changed from figures for January 2010. Provides estimates by immigrants’ period of entry, region and country of origin, state of residence, age, and sex. From the Office of Immigration Statistics of the Department of Homeland Security
