RANKING · 2024 ACS · 33 SHOWN OF 33

Highest Puerto Rican population share, Montana counties

Montana counties ranked by the share of all residents who are Puerto Rican origin (2024 American Community Survey). A concentration measure: Puerto Rican residents as a percentage of total population. This list covers the 33 counties in Montana that qualify, ranked against each other statewide. The median across all 33 is 0.1%. Biggest climber in the top 100 since 2020: Chouteau County, MT, up 22 places to #1.

Puerto Rican Americans: full group profile →

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SAME RANKING BYCities States Metros

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

YEAR2010 2020 2024

RANKPLACESTATEPOPPUERTO RICAN SHAREVS 2010

01▲22Chouteau County, MTMT5,8650.8%+0.5 pts

02▲14Teton County, MTMT6,4960.8%–

03Richland County, MTMT11,3770.7%+0.7 pts

04▲22Musselshell County, MTMT5,5820.7%–

05▼1Cascade County, MTMT85,0290.6%+0.2 pts

06Treasure County, MTMT7280.4%–

07▼5Stillwater County, MTMT9,4450.4%+0.3 pts

08▼1Lewis and Clark County, MTMT75,3310.4%+0.2 pts

09▼6Blaine County, MTMT6,8600.3%–

10▼5Sanders County, MTMT14,0620.3%–

11▼3Gallatin County, MTMT128,7400.3%+0.2 pts

12Granite County, MTMT3,6580.2%–

13Yellowstone County, MTMT172,6920.2%0.0 pts

14▲1Flathead County, MTMT115,4290.2%+0.1 pts

15▼6Missoula County, MTMT123,5130.2%−0.1 pts

16▼2Ravalli County, MTMT48,5820.2%0.0 pts

17▲8Meagher County, MTMT2,1370.1%−0.4 pts

18Jefferson County, MTMT13,3290.1%–

19Toole County, MTMT5,2110.1%–

20▼2Carbon County, MTMT11,4660.1%–

21Mineral County, MTMT5,1850.1%0.0 pts

22▼10Lake County, MTMT33,3920.1%−0.3 pts

23▼2Dawson County, MTMT8,6920.1%0.0 pts

24Big Horn County, MTMT12,7520.1%–

25▼8Custer County, MTMT12,0340.1%−0.2 pts

26Park County, MTMT18,2140.1%0.0 pts

27▼21Lincoln County, MTMT22,3280.1%0.0 pts

28▼4Silver Bow County, MTMT36,1180.0%−0.1 pts

29▼19Rosebud County, MTMT8,2530.0%–

30Fergus County, MTMT11,8250.0%–

31▼30Roosevelt County, MTMT10,2420.0%–

32Pondera County, MTMT6,0720.0%–

33Beaverhead County, MTMT10,0430.0%–

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES