Immigrant Populations

The size of the undocumented immigrant population in the United States is probably about 9 million people.

A report released by the U.S. Immigration and Naturalization Service in January 2003 estimated the size of the undocumented immigrant population at 7.0 million in 2000.

A separate analysis by Jeff Passel of the Urban Institute estimated there were 8.5 million undocumented immigrants in 2000. Passel and others believe that net illegal immigration from Mexico alone has been growing at a rate of 500,000 people annually, which places current estimates at a minimum of 9.0 million unauthorized immigrants.

In the 1990s, the undocumented immigrant population grew by 350,000 per year.
According to the INS, from 1990 to 1999, the size of the undocumented immigrant population grew by about 350,000 people per year on average, and by as much as 500,000 people per year in the latter third of the decade.

The states with the largest unauthorized populations are California and Texas.
INS estimates show the states that had the largest unauthorized immigrant populations in 2000 were California (2.2 million) and Texas (1.0 million), followed by New York (0.5 million), Illinois (0.4 million), and Florida (0.3 million). Texas became the second state after California to have over one million unauthorized residents.

Georgia, North Carolina, and Colorado experienced rapid growth in their unauthorized immigrant populations between 1990 and 2000. Between 1990 and 2000, the unauthorized immigrant populations of several states grew rapidly, according to the US Immigration and Naturalization Service, including:�� Georgia 571 percent (from 34,000 to 228,000.