Largest foreign-born population, Colorado counties

Colorado 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 64 counties in Colorado that qualify, ranked against each other statewide. The median across all 64 is 642. Biggest climber in the top 100 since 2020: Park County, CO, up 13 places to #35.