Largest Swiss population, Iowa counties

Iowa counties ranked by the number of residents who are Swiss ancestry, from the 2024 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 96 counties in Iowa that qualify, ranked against each other statewide. The median across all 96 is 53. Biggest climber in the top 100 since 2020: Wayne County, IA, up 51 places to #24.