RANKING · 2020 CENSUS · 27 SHOWN OF 27

Highest Puerto Rican population share, Montana counties · 2020

Montana counties ranked by the share of all residents who are Puerto Rican origin (2020 American Community Survey). A concentration measure: Puerto Rican residents as a percentage of total population. This list covers the 27 counties in Montana that qualify, ranked against each other statewide. The median across all 27 is 0.2%.

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

01Roosevelt County, MTMT10,2420.7%–

02Stillwater County, MTMT9,4450.6%+0.5 pts

03Blaine County, MTMT6,8600.6%–

04Cascade County, MTMT85,0290.5%+0.1 pts

05Sanders County, MTMT14,0620.3%–

06Lincoln County, MTMT22,3280.3%+0.2 pts

07Lewis and Clark County, MTMT75,3310.3%+0.1 pts

08Gallatin County, MTMT128,7400.3%+0.2 pts

09Missoula County, MTMT123,5130.3%0.0 pts

10Rosebud County, MTMT8,2530.2%–

11Hill County, MTMT16,1670.2%+0.1 pts

12Lake County, MTMT33,3920.2%−0.2 pts

13Yellowstone County, MTMT172,6920.2%0.0 pts

14Ravalli County, MTMT48,5820.2%0.0 pts

15Flathead County, MTMT115,4290.2%0.0 pts

16Teton County, MTMT6,4960.2%–

17Custer County, MTMT12,0340.1%−0.1 pts

18Carbon County, MTMT11,4660.1%–

19Deer Lodge County, MTMT9,7090.1%−0.1 pts

20Wheatland County, MTMT2,1000.1%–

21Dawson County, MTMT8,6920.1%0.0 pts

22Glacier County, MTMT13,4630.1%+0.1 pts

23Chouteau County, MTMT5,8650.1%−0.2 pts

24Silver Bow County, MTMT36,1180.1%0.0 pts

25Meagher County, MTMT2,1370.1%−0.5 pts

26Musselshell County, MTMT5,5820.0%–

27Valley County, MTMT7,3850.0%–

SHOWING 1–27 OF 27

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS