RANKING · 2020 CENSUS · 53 SHOWN OF 53

Largest Mexican population, Montana counties · 2020

Montana counties ranked by the number of residents who are Mexican 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 53 counties in Montana that qualify, ranked against each other statewide.

Mexican Americans: full group profile →

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SAME RANKING BYCities States Metros

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

YEAR2010 2020 2024

RANKPLACESTATEPOPMEXICAN POPULATIONVS 2010

01Yellowstone County, MTMT172,6926,943+34%

02Gallatin County, MTMT128,7402,783+49%

03Missoula County, MTMT123,5132,552+62%

04Cascade County, MTMT85,0292,512+43%

05Flathead County, MTMT115,4291,969+45%

06Lewis and Clark County, MTMT75,3311,724+72%

07Silver Bow County, MTMT36,1181,097+16%

08Lake County, MTMT33,3921,086+57%

09Ravalli County, MTMT48,582985+20%

10Big Horn County, MTMT12,752785+87%

11Richland County, MTMT11,377588+151%

12Rosebud County, MTMT8,253413+59%

13Hill County, MTMT16,167412+115%

14Beaverhead County, MTMT10,043376+31%

15Park County, MTMT18,214364+78%

16Glacier County, MTMT13,463352+71%

17Lincoln County, MTMT22,328343+22%

18Custer County, MTMT12,034325+82%

19Roosevelt County, MTMT10,242274+219%

20Deer Lodge County, MTMT9,709233+40%

21Carbon County, MTMT11,466209+39%

22Sanders County, MTMT14,062202+94%

23Stillwater County, MTMT9,445187+110%

24Blaine County, MTMT6,860154+340%

25Madison County, MTMT10,026145+31%

26Jefferson County, MTMT13,329138−3%

27Sheridan County, MTMT3,436137+1042%

28Fergus County, MTMT11,825136−8%

29Sweet Grass County, MTMT3,762122+336%

30Broadwater County, MTMT8,493120+700%

31Phillips County, MTMT4,203120+314%

32Powell County, MTMT7,157110+29%

33Dawson County, MTMT8,692104+112%

34Musselshell County, MTMT5,58298+44%

35Mineral County, MTMT5,18587+6%

36Toole County, MTMT5,21178−33%

37McCone County, MTMT1,72069–

38Wibaux County, MTMT88567+415%

39Judith Basin County, MTMT2,16264–

40Meagher County, MTMT2,13761−21%

41Powder River County, MTMT1,78156+44%

42Valley County, MTMT7,38554+29%

43Golden Valley County, MTMT84445–

44Pondera County, MTMT6,07236−48%

45Wheatland County, MTMT2,10036–

46Fallon County, MTMT2,95926−43%

47Chouteau County, MTMT5,86524−48%

48Prairie County, MTMT1,11218+350%

49Teton County, MTMT6,49614−84%

50Daniels County, MTMT1,61210+100%

51Granite County, MTMT3,65810−9%

52Garfield County, MTMT1,1483–

53Treasure County, MTMT7282−98%

SHOWING 1–53 OF 53

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS