RANKING · 2024 ACS · 27 SHOWN OF 27

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.

South Americans: full group profile →

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SAME RANKING BYCities States Metros

RELATEDLargest Mexican population Highest Mexican population share Largest Puerto Rican population Highest Puerto Rican population share Largest Cuban population Highest Cuban population share

YEAR2010 2020 2024

RANKPLACESTATEPOPSOUTH AMERICAN POPULATIONVS 2010

01Gallatin County, MTMT128,740845+357%

02Missoula County, MTMT123,513734+284%

03Yellowstone County, MTMT172,692331+92%

04Flathead County, MTMT115,429187+18%

05Park County, MTMT18,214160–

06Cascade County, MTMT85,029159+96%

07Lewis and Clark County, MTMT75,331126+142%

08Ravalli County, MTMT48,58282+273%

09Lake County, MTMT33,39279+1217%

10Madison County, MTMT10,02663+117%

11Lincoln County, MTMT22,32850+285%

12Jefferson County, MTMT13,32947–

13Rosebud County, MTMT8,25344–

14Richland County, MTMT11,37724–

15Carbon County, MTMT11,46620+567%

16Hill County, MTMT16,16718−63%

17Fergus County, MTMT11,82515–

18Roosevelt County, MTMT10,24215−42%

19Valley County, MTMT7,38514–

20Powell County, MTMT7,15711–

21Toole County, MTMT5,21111–

22Silver Bow County, MTMT36,11810–

23Big Horn County, MTMT12,7527–

24Golden Valley County, MTMT8446–

25Teton County, MTMT6,4963–

26Sheridan County, MTMT3,4362–

27Meagher County, MTMT2,1371−95%

SHOWING 1–27 OF 27

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES