RANKING · 2024 ACS · 56 SHOWN OF 56

Highest American population share, Montana counties

Montana counties ranked by the share of all residents who are American ancestry (2024 American Community Survey). A concentration measure: American residents as a percentage of total population. This list covers the 56 counties in Montana that qualify, ranked against each other statewide.

American ancestry: full group profile →

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SAME RANKING BYCities States Metros

RELATEDLargest American population Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share Largest Iraqi population

YEAR2010 2020 2024

RANKPLACESTATEPOPAMERICAN SHAREVS 2010

01Garfield County, MTMT1,14826.1%+15.5 pts

02Wheatland County, MTMT2,10025.0%−10.2 pts

03Petroleum County, MTMT54819.7%+16.2 pts

04Daniels County, MTMT1,61218.7%+17.5 pts

05Fergus County, MTMT11,82513.0%+8.9 pts

06Meagher County, MTMT2,13712.6%+9.4 pts

07Valley County, MTMT7,38512.3%+5.6 pts

08Chouteau County, MTMT5,86512.3%+10.3 pts

09Judith Basin County, MTMT2,16212.1%+10.3 pts

10Richland County, MTMT11,37711.4%+2.7 pts

11Treasure County, MTMT72811.1%−29.1 pts

12Hill County, MTMT16,16711.0%+7.9 pts

13Prairie County, MTMT1,11210.5%−3.7 pts

14McCone County, MTMT1,72010.3%−2.4 pts

15Powder River County, MTMT1,78110.0%−21.0 pts

16Phillips County, MTMT4,2038.8%−1.3 pts

17Teton County, MTMT6,4968.8%+4.5 pts

18Wibaux County, MTMT8858.5%−3.5 pts

19Musselshell County, MTMT5,5828.4%+1.3 pts

20Sanders County, MTMT14,0627.7%+4.4 pts

21Granite County, MTMT3,6587.7%−0.2 pts

22Park County, MTMT18,2147.5%+0.0 pts

23Cascade County, MTMT85,0297.4%+2.9 pts

24Dawson County, MTMT8,6927.0%+0.5 pts

25Rosebud County, MTMT8,2536.8%−18.2 pts

26Carter County, MTMT1,3836.4%+2.1 pts

27Custer County, MTMT12,0346.3%−7.9 pts

28Powell County, MTMT7,1576.3%+1.6 pts

29Fallon County, MTMT2,9596.0%+5.6 pts

30Lewis and Clark County, MTMT75,3315.9%+0.8 pts

31Roosevelt County, MTMT10,2425.5%+4.3 pts

32Liberty County, MTMT1,9575.4%+4.0 pts

33Toole County, MTMT5,2115.4%+1.8 pts

34Deer Lodge County, MTMT9,7095.1%+2.5 pts

35Stillwater County, MTMT9,4455.0%−1.9 pts

36Lake County, MTMT33,3925.0%+1.2 pts

37Lincoln County, MTMT22,3285.0%+1.7 pts

38Beaverhead County, MTMT10,0435.0%+1.5 pts

39Carbon County, MTMT11,4665.0%−7.6 pts

40Ravalli County, MTMT48,5824.8%−3.6 pts

41Golden Valley County, MTMT8444.8%−4.2 pts

42Gallatin County, MTMT128,7404.7%+1.2 pts

43Yellowstone County, MTMT172,6924.7%−5.3 pts

44Silver Bow County, MTMT36,1184.7%+1.5 pts

45Blaine County, MTMT6,8604.6%+2.7 pts

46Flathead County, MTMT115,4294.6%+0.0 pts

47Sheridan County, MTMT3,4364.6%−0.4 pts

48Madison County, MTMT10,0264.5%+1.6 pts

49Pondera County, MTMT6,0723.8%−1.8 pts

50Missoula County, MTMT123,5133.7%−1.7 pts

51Mineral County, MTMT5,1852.8%−0.2 pts

52Jefferson County, MTMT13,3292.7%−1.5 pts

53Sweet Grass County, MTMT3,7622.7%−10.3 pts

54Broadwater County, MTMT8,4932.5%+0.1 pts

55Big Horn County, MTMT12,7522.3%−9.8 pts

56Glacier County, MTMT13,4631.8%+0.4 pts

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES