RANKING · 2020 CENSUS · 56 SHOWN OF 56

Highest American population share, Montana counties · 2020

Montana counties ranked by the share of all residents who are American ancestry (2023 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.

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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 2000

01Garfield County, MTMT1,14836.6%–

02Petroleum County, MTMT54823.3%–

03Wheatland County, MTMT2,10018.7%–

04Phillips County, MTMT4,20315.3%–

05Fergus County, MTMT11,82514.0%–

06Musselshell County, MTMT5,58213.4%–

07Judith Basin County, MTMT2,16213.0%–

08Chouteau County, MTMT5,86511.6%–

09McCone County, MTMT1,72011.2%–

10Valley County, MTMT7,3859.6%–

11Cascade County, MTMT85,0298.9%–

12Carter County, MTMT1,3838.7%–

13Carbon County, MTMT11,4668.3%–

14Stillwater County, MTMT9,4457.6%–

15Treasure County, MTMT7287.5%–

16Powell County, MTMT7,1577.4%–

17Sanders County, MTMT14,0627.4%–

18Dawson County, MTMT8,6926.9%–

19Powder River County, MTMT1,7816.9%–

20Sheridan County, MTMT3,4366.6%–

21Hill County, MTMT16,1676.1%–

22Daniels County, MTMT1,6125.9%–

23Yellowstone County, MTMT172,6925.9%–

24Teton County, MTMT6,4965.6%–

25Blaine County, MTMT6,8605.5%–

26Golden Valley County, MTMT8445.4%–

27Prairie County, MTMT1,1125.3%–

28Deer Lodge County, MTMT9,7094.9%–

29Granite County, MTMT3,6584.8%–

30Beaverhead County, MTMT10,0434.8%–

31Richland County, MTMT11,3774.6%–

32Custer County, MTMT12,0344.5%–

33Broadwater County, MTMT8,4934.5%–

34Flathead County, MTMT115,4294.4%–

35Lake County, MTMT33,3924.3%–

36Lewis and Clark County, MTMT75,3314.2%–

37Fallon County, MTMT2,9594.2%–

38Wibaux County, MTMT8854.0%–

39Mineral County, MTMT5,1853.8%–

40Gallatin County, MTMT128,7403.8%–

41Jefferson County, MTMT13,3293.6%–

42Missoula County, MTMT123,5133.5%–

43Lincoln County, MTMT22,3283.5%–

44Ravalli County, MTMT48,5823.5%–

45Pondera County, MTMT6,0723.4%–

46Toole County, MTMT5,2113.3%–

47Rosebud County, MTMT8,2533.0%–

48Madison County, MTMT10,0262.9%–

49Sweet Grass County, MTMT3,7622.7%–

50Liberty County, MTMT1,9572.6%–

51Park County, MTMT18,2142.6%–

52Meagher County, MTMT2,1372.3%–

53Silver Bow County, MTMT36,1182.2%–

54Roosevelt County, MTMT10,2421.8%–

55Glacier County, MTMT13,4631.6%–

56Big Horn County, MTMT12,7521.5%–

SHOWING 1–56 OF 56

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