RANKING · 2010 CENSUS · 56 SHOWN OF 56

Highest American population share, Montana counties · 2010

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.

MontanaAll states All rankings

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

01Treasure County, MTMT72840.2%–

02Wheatland County, MTMT2,10035.2%–

03Powder River County, MTMT1,78131.0%–

04Rosebud County, MTMT8,25325.0%–

05Custer County, MTMT12,03414.3%–

06Prairie County, MTMT1,11214.1%–

07Sweet Grass County, MTMT3,76213.0%–

08McCone County, MTMT1,72012.7%–

09Carbon County, MTMT11,46612.6%–

10Big Horn County, MTMT12,75212.1%–

11Wibaux County, MTMT88512.1%–

12Garfield County, MTMT1,14810.5%–

13Phillips County, MTMT4,20310.1%–

14Yellowstone County, MTMT172,69210.0%–

15Golden Valley County, MTMT8449.0%–

16Richland County, MTMT11,3778.7%–

17Ravalli County, MTMT48,5828.3%–

18Granite County, MTMT3,6587.9%–

19Park County, MTMT18,2147.4%–

20Musselshell County, MTMT5,5827.0%–

21Stillwater County, MTMT9,4456.9%–

22Valley County, MTMT7,3856.8%–

23Dawson County, MTMT8,6926.5%–

24Pondera County, MTMT6,0725.6%–

25Missoula County, MTMT123,5135.4%–

26Lewis and Clark County, MTMT75,3315.1%–

27Sheridan County, MTMT3,4365.0%–

28Powell County, MTMT7,1574.7%–

29Flathead County, MTMT115,4294.6%–

30Cascade County, MTMT85,0294.5%–

31Carter County, MTMT1,3834.3%–

32Teton County, MTMT6,4964.3%–

33Jefferson County, MTMT13,3294.2%–

34Fergus County, MTMT11,8254.2%–

35Lake County, MTMT33,3923.8%–

36Toole County, MTMT5,2113.6%–

37Petroleum County, MTMT5483.5%–

38Gallatin County, MTMT128,7403.5%–

39Beaverhead County, MTMT10,0433.4%–

40Sanders County, MTMT14,0623.3%–

41Lincoln County, MTMT22,3283.3%–

42Meagher County, MTMT2,1373.2%–

43Silver Bow County, MTMT36,1183.2%–

44Hill County, MTMT16,1673.0%–

45Mineral County, MTMT5,1853.0%–

46Madison County, MTMT10,0262.9%–

47Deer Lodge County, MTMT9,7092.6%–

48Broadwater County, MTMT8,4932.3%–

49Blaine County, MTMT6,8602.0%–

50Chouteau County, MTMT5,8652.0%–

51Judith Basin County, MTMT2,1621.7%–

52Liberty County, MTMT1,9571.4%–

53Glacier County, MTMT13,4631.4%–

54Roosevelt County, MTMT10,2421.3%–

55Daniels County, MTMT1,6121.2%–

56Fallon County, MTMT2,9590.4%–

SHOWING 1–56 OF 56

Download CSV (full list, 56 rows)

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