RANKING · 2020 CENSUS · 56 SHOWN OF 56

Most foreign-born residents, Montana counties · 2020

Montana counties ranked by the share of residents born outside the US (2020 ACS). This list covers the 56 counties in Montana that qualify, ranked against each other statewide.

MontanaAll states All rankings

SAME RANKING BYCities States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

YEAR2010 2020 2024

RANKPLACESTATEPOPFOREIGN-BORNVS 2010

01Prairie County, MTMT1,1124.9%+568%

02Lincoln County, MTMT22,3283.5%+61%

03Meagher County, MTMT2,1373.4%−6%

04Madison County, MTMT10,0263.3%−25%

05Gallatin County, MTMT128,7403.2%+5%

06Missoula County, MTMT123,5133.0%+25%

07Toole County, MTMT5,2112.9%−19%

08Phillips County, MTMT4,2032.9%+246%

09Flathead County, MTMT115,4292.7%+36%

10Richland County, MTMT11,3772.6%+32%

11Park County, MTMT18,2142.6%−13%

12Musselshell County, MTMT5,5822.5%+2%

13Petroleum County, MTMT5482.4%–

14Wibaux County, MTMT8852.3%+54%

15Fergus County, MTMT11,8252.3%+141%

16Ravalli County, MTMT48,5822.3%+34%

17Lake County, MTMT33,3922.2%+7%

18Sheridan County, MTMT3,4362.2%+32%

19Golden Valley County, MTMT8442.1%+1592%

20Silver Bow County, MTMT36,1182.0%−7%

21Yellowstone County, MTMT172,6921.9%+17%

22Custer County, MTMT12,0341.9%+76%

23Cascade County, MTMT85,0291.9%−14%

24Daniels County, MTMT1,6121.7%+8%

25McCone County, MTMT1,7201.7%+385%

26Sanders County, MTMT14,0621.7%+17%

27Deer Lodge County, MTMT9,7091.7%+69%

28Pondera County, MTMT6,0721.7%−28%

29Fallon County, MTMT2,9591.6%+3%

30Rosebud County, MTMT8,2531.6%+145%

31Glacier County, MTMT13,4631.6%+16%

32Powder River County, MTMT1,7811.5%+323%

33Lewis and Clark County, MTMT75,3311.5%−24%

34Jefferson County, MTMT13,3291.5%+17%

35Wheatland County, MTMT2,1001.5%–

36Roosevelt County, MTMT10,2421.5%+116%

37Dawson County, MTMT8,6921.5%+216%

38Chouteau County, MTMT5,8651.4%−3%

39Broadwater County, MTMT8,4931.4%+110%

40Hill County, MTMT16,1671.2%−17%

41Powell County, MTMT7,1571.2%+9%

42Beaverhead County, MTMT10,0431.1%−55%

43Carbon County, MTMT11,4661.1%−50%

44Valley County, MTMT7,3851.1%−42%

45Mineral County, MTMT5,1851.0%−5%

46Teton County, MTMT6,4961.0%−56%

47Granite County, MTMT3,6580.9%+49%

48Stillwater County, MTMT9,4450.8%−34%

49Judith Basin County, MTMT2,1620.8%−35%

50Sweet Grass County, MTMT3,7620.8%−65%

51Blaine County, MTMT6,8600.6%+24%

52Big Horn County, MTMT12,7520.5%−19%

53Liberty County, MTMT1,9570.5%−79%

54Carter County, MTMT1,3830.2%−41%

55Garfield County, MTMT1,1480.0%−100%

56Treasure County, MTMT7280.0%−100%

SHOWING 1–56 OF 56

Download CSV (full list, 56 rows)

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