Immigrants

40 M

As of 1/1/2011

Date All Immigrants Unauthorized Immigrants
2000 31.1 8.4
2001 31.5 9.3
2002 33.1 9.4
2003 33.7 9.7
2004 34.3 10.4
2005 35.8 11.1
2006 37.5 11.3
2007 38 12
2008 38 11.6
2009 38.5 11.1
2010 39.9 11.2
2011 40.4 11.1

NOTE: For immigrant population, 2000 Census (5% IPUMS) and 2001-2011 American Community Surveys (IPUMS). For unauthorized immigrant popuation, Pew Hispanic Center estimates based on residual methodology applied to March Supplements to the Current Population Survey. See Methodology in Passel and Cohn (2012) for more details.

The United States is the world’s leader as a destination for immigrants. Since 2000, the immigrant population has increased by 30% to a record 40.4 million. Meanwhile, the number of unauthorized immigrants living in the United States peaked at 12 million in 2007 and has fallen since then, mainly due to a decrease in the number of new immigrants from Mexico, the single largest source of U.S. migrants. Read more