RANKING · 2020 CENSUS · 53 SHOWN OF 53

Highest Mexican population share, Montana counties · 2020

Montana counties ranked by the share of all residents who are Mexican origin (2023 American Community Survey). A concentration measure: Mexican residents as a percentage of total population. This list covers the 53 counties in Montana that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

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

YEAR2010 2020 2024

RANKPLACESTATEPOPMEXICAN SHAREVS 2000

01Wibaux County, MTMT8856.5%–

02Big Horn County, MTMT12,7525.9%–

03Golden Valley County, MTMT8445.5%–

04Richland County, MTMT11,3775.3%–

05Rosebud County, MTMT8,2534.6%–

06Yellowstone County, MTMT172,6924.3%–

07Sheridan County, MTMT3,4364.0%–

08Beaverhead County, MTMT10,0434.0%–

09McCone County, MTMT1,7203.8%–

10Lake County, MTMT33,3923.6%–

11Powder River County, MTMT1,7813.4%–

12Meagher County, MTMT2,1373.4%–

13Sweet Grass County, MTMT3,7623.3%–

14Judith Basin County, MTMT2,1623.3%–

15Silver Bow County, MTMT36,1183.1%–

16Cascade County, MTMT85,0293.1%–

17Phillips County, MTMT4,2033.0%–

18Custer County, MTMT12,0342.8%–

19Glacier County, MTMT13,4632.6%–

20Deer Lodge County, MTMT9,7092.5%–

21Lewis and Clark County, MTMT75,3312.5%–

22Hill County, MTMT16,1672.5%–

23Gallatin County, MTMT128,7402.5%–

24Roosevelt County, MTMT10,2422.5%–

25Blaine County, MTMT6,8602.3%–

26Ravalli County, MTMT48,5822.3%–

27Park County, MTMT18,2142.2%–

28Missoula County, MTMT123,5132.1%–

29Musselshell County, MTMT5,5822.1%–

30Mineral County, MTMT5,1852.0%–

31Broadwater County, MTMT8,4932.0%–

32Stillwater County, MTMT9,4452.0%–

33Carbon County, MTMT11,4662.0%–

34Flathead County, MTMT115,4291.9%–

35Lincoln County, MTMT22,3281.7%–

36Sanders County, MTMT14,0621.7%–

37Madison County, MTMT10,0261.7%–

38Wheatland County, MTMT2,1001.7%–

39Toole County, MTMT5,2111.6%–

40Powell County, MTMT7,1571.6%–

41Prairie County, MTMT1,1121.5%–

42Fergus County, MTMT11,8251.2%–

43Dawson County, MTMT8,6921.2%–

44Jefferson County, MTMT13,3291.1%–

45Fallon County, MTMT2,9590.9%–

46Valley County, MTMT7,3850.7%–

47Pondera County, MTMT6,0720.6%–

48Daniels County, MTMT1,6120.6%–

49Chouteau County, MTMT5,8650.4%–

50Treasure County, MTMT7280.3%–

51Granite County, MTMT3,6580.3%–

52Garfield County, MTMT1,1480.3%–

53Teton County, MTMT6,4960.2%–

SHOWING 1–53 OF 53

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UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES