2005-03-20-皮尤-Estimates_of_the_Size_and_Characteristics_of_the_Undocumented_Population_11页_112kb

报告摘要

The report provides estimates of the U.S. undocumented population based on the March 2004 Current Population Survey data. Key findings include:

In March 2004, the estimated number of undocumented immigrants was 10.3 million.
By March 2005, the estimated population was approximately 11 million, assuming steady growth.
Mexicans constitute the largest group, making up 5.7 million (57% of the total in 2004 estimates).
Growth has been rapid, with an average annual increase of about 485,000 since 2000.
The population includes a significant youth component, with about 1.7 million (17%) under 18 years of age.
Regionally, nearly 68% of the population is concentrated in eight states: California (24%), Texas (14%), Florida (9%), New York (7%), Arizona (5%), Illinois (4%), New Jersey (4%), and North Carolina (3%). Arizona and North Carolina have seen rapid growth, moving into top eight states.

Estimated 10.3 million undocumented immigrants in March 2004.
Growth rate of about 485,000 per year since 2000.
Mexicans (5.9 million), other Latin Americans (2.5 million), Asians (0.9 million), Europeans and Canadians (0.6 million), and others (0.4 million).

Concentrated in California, Texas, Florida, New York, Arizona, Illinois, New Jersey, and North Carolina as of 2004.
New settlement areas like Arizona and North Carolina show higher proportions of undocumented immigrants compared to traditional states.
By 2004, only 61% lived in traditional states compared to 88% in 1990.

Approximately 17% under 18, 60% male in the 18-39 age group.
About 29% women, with few aged 40+. Over 3 million U.S.-born children of undocumented parents.
Labor force estimates suggest around 7 million undocumented workers in 2004.

Methods involve subtracting legal immigrants from total foreigners using CPS data, with adjustments for coverage issues.

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