The nation’s total immigrant population reached a record 40.4 million in 2011, according to an analysis of Census Bureau data by the Pew Hispanic Center, a project of the Pew Research Center.
Over the last decade, the number of immigrants in the U.S. has steadily grown. Since 2007 alone, the number of immigrants living in the U.S. increased by 2.4 million.
The number of unauthorized immigrants living in the U.S. also grew during the last decade, rising from 8.4 million in 2000 to 11.1 million in 2011. However, this population peaked at 12 million in 2007, then fell to 11.1 million in 2009. It has remained at that level through 2011, the last year for which an estimate is available (Passel and Cohn, 2012).
Read the full report, A Nation of Immigrants, on the Pew Research Center Hispanic Center website.