RANKING · 2020 CENSUS · 27 SHOWN OF 27

Largest Puerto Rican population, Montana counties · 2020

Montana counties ranked by the number of residents who are Puerto Rican origin, from the 2020 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 36.

Puerto Rican Americans: full group profile →

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SAME RANKING BYCities States Metros

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

YEAR2010 2020 2024

RANKPLACESTATEPOPPUERTO RICAN POPULATIONVS 2010

01Cascade County, MTMT85,029382+27%

02Gallatin County, MTMT128,740305+286%

03Yellowstone County, MTMT172,692303−5%

04Missoula County, MTMT123,513301+5%

05Flathead County, MTMT115,429191+54%

06Lewis and Clark County, MTMT75,331189+41%

07Ravalli County, MTMT48,58282+32%

08Roosevelt County, MTMT10,24279–

09Lake County, MTMT33,39261−42%

10Stillwater County, MTMT9,44556+522%

11Lincoln County, MTMT22,32855+358%

12Blaine County, MTMT6,86039–

13Sanders County, MTMT14,06237–

14Hill County, MTMT16,16736+177%

15Silver Bow County, MTMT36,11829−29%

16Rosebud County, MTMT8,25322–

17Custer County, MTMT12,03413−54%

18Carbon County, MTMT11,46612–

19Glacier County, MTMT13,46312+300%

20Teton County, MTMT6,49610–

21Deer Lodge County, MTMT9,7099−61%

22Dawson County, MTMT8,6928+14%

23Chouteau County, MTMT5,8655−71%

24Wheatland County, MTMT2,1002–

25Meagher County, MTMT2,1371−91%

26Musselshell County, MTMT5,5821–

27Valley County, MTMT7,3851–

SHOWING 1–27 OF 27

Download CSV (full list, 27 rows)

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