Largest Finnish population, Iowa counties

Iowa counties ranked by the number of residents who are Finnish 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 68 counties in Iowa that qualify, ranked against each other statewide. The median across all 68 is 11. Biggest climber in the top 100 since 2020: Butler County, IA, up 39 places to #17.