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On a regional basis, the foreign-born share of the labor force ranged widely in 2005, from about a quarter in the West to 7 percent in the Midwest.
In the Northeast and South, the foreign-born share represented 17 and 13 percent of the labor force, respectively.
These data are from the Current Population Survey. Find more information in "Foreign-born Workers: Labor Force Characteristics in 2005" (PDF) (TXT), news release USDL 06-640.
Bureau of Labor Statistics, U.S. Department of Labor, The Economics Daily, Foreign-born workers by region at https://www.bls.gov/opub/ted/2006/may/wk2/art04.htm (visited October 07, 2024).