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The nation’s foreign-born population has become more dispersed since 1990, but the Southwest region and large cities continue to have the highest concentrations of immigrants. As of 2017, 19% of the national immigrant population lives in the top five counties: Los Angeles County, Calif.; Miami-Dade County, Fla.; Harris County, Texas; Queens County, N.Y. and Cook County, Ill. In comparison, 30% of the nation’s immigrant population in 1990 lived in the top five counties at the time.

Map showing percent foreign born, by county in the U.S., 1990

Map showing percent foreign born, by county in the U.S., 2000

Map showing percent foreign born, by county in the U.S., 2006-2010

Map showing the percent foreign born, by county in the U.S., 2012-2016

Map showing percent foreign born, by county in the U.S., 2013-2017