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Estimates of the Unauthorized Immigrant Population Residing in the United States

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The reports below provide estimates of the size of the unauthorized immigrant population residing in the United States by period of entry, region and country of origin, state of residence, age, and sex. The unauthorized resident immigrant population is defined as all foreign-born non-citizens who are not legal residents. Most unauthorized residents either entered the United States without inspection or were admitted temporarily and stayed past the date they were required to leave. Unauthorized immigrants applying for adjustment to LPR status under the Immigration and Nationality Act (INA) are unauthorized until they have been granted lawful permanent residence, even though they may have been authorized to work. Persons who are beneficiaries of Temporary Protected Status (TPS)—an estimated several hundred thousand—are not technically unauthorized but were excluded from the legally resident immigrant population because data are unavailable in sufficient detail to estimate this population.

Return to main unauthorized immigrants page for more resources.

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Attachment Ext. Size Date
Estimates of the Unauthorized Immigrant Population Residing in the United States: January 2015-January 2018 PDF 855.98 KB 04/19/2021
Estimates of the Unauthorized Immigrant Population Residing in the United States: January 2015 PDF 562.83 KB
Estimates of the Unauthorized Immigrant Population Residing in the United States: January 2014 PDF 160.42 KB
Estimates of the Unauthorized Immigrant Population Residing in the United States: January 2012 PDF 672.61 KB
Estimates of the Unauthorized Immigrant Population Residing in the United States: January 2011 PDF 444.73 KB
Estimates of the Unauthorized Immigrant Population Residing in the United States: January 2010 PDF 481.41 KB
Estimates of the Unauthorized Immigrant Population Residing in the United States: January 2009 PDF 360.58 KB
Estimates of the Unauthorized Immigrant Population Residing in the United States: January 2008 PDF 226.04 KB
Estimates of the Unauthorized Immigrant Population Residing in the United States: January 2007 PDF 291.31 KB
Estimates of the Unauthorized Immigrant Population Residing in the United States: January 2006 PDF 576.11 KB
Estimates of the Unauthorized Immigrant Population Residing in the United States: January 2005 PDF 220.49 KB
Estimates of the Unauthorized Immigrant Population Residing in the United States: 1996 PDF 94.99 KB
Estimates of the Unauthorized Immigrant Population Residing in the United States: 1990 to 2000 PDF 490.97 KB
Executive Summary Estimates of the Unauthorized Immigrant Population Residing in the United States: 1990 to 2000 PDF 108.19 KB
Last Updated: 11/21/2023
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