Facts on U.S. Immigrants, 2015
Statistical portrait of the foreign-born population in the United States
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 2015, the five counties with the largest foreign-born populations (Los Angeles County, Calif.; Miami-Dade County, Fla.; Cook County, Ill.; Harris County, Texas and Queens County, N.Y) account for 19% of the national immigrant population in the U.S. In 1990. though, the nation’s immigrant population was more concentrated: The top five counties then accounted for 30% of the U.S. immigrant population.