Largest South American population, Montana counties

Montana counties ranked by the number of residents who are South American origin, 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 27 counties in Montana that qualify, ranked against each other statewide. The median across all 27 is 24. Biggest climber in the top 100 since 2020: Lincoln County, MT, up 8 places to #11.