Largest foreign-born population, Iowa counties

Iowa counties with the most residents born outside the United States, as of the 2024 American Community Survey. Ranked by number of people, not share. This list covers the 99 counties in Iowa that qualify, ranked against each other statewide. The median across all 99 is 369. Biggest climber in the top 100 since 2020: Cherokee County, IA, up 36 places to #42.