RANKING · 2024 ACS · 50 SHOWN OF 50

Largest Welsh population, Montana counties

Montana counties ranked by the number of residents who are Welsh ancestry, from the 2024 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 50 counties in Montana that qualify, ranked against each other statewide.

Welsh Americans: full group profile →

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SAME RANKING BYCities States Metros

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

YEAR2010 2020 2024

RANKPLACESTATEPOPWELSH POPULATIONVS 2010

01Yellowstone County, MTMT172,6921,077−28%

02Gallatin County, MTMT128,7401,039−25%

03Missoula County, MTMT123,5131,038+18%

04Flathead County, MTMT115,4291,004+2%

05Lewis and Clark County, MTMT75,331780+24%

06Ravalli County, MTMT48,582591−21%

07Cascade County, MTMT85,029540−19%

08Silver Bow County, MTMT36,118204−56%

09Custer County, MTMT12,034131−1%

10Dawson County, MTMT8,692119+231%

11Lake County, MTMT33,392117−45%

12Deer Lodge County, MTMT9,709101−12%

13Jefferson County, MTMT13,32994−41%

14Carbon County, MTMT11,46687−34%

15Stillwater County, MTMT9,44579−10%

16Madison County, MTMT10,02675+6%

17Richland County, MTMT11,37770+67%

18Fergus County, MTMT11,82566−13%

19Beaverhead County, MTMT10,04360−74%

20Park County, MTMT18,21458−64%

21Meagher County, MTMT2,13757+148%

22Hill County, MTMT16,16754−43%

23Mineral County, MTMT5,18554−25%

24Big Horn County, MTMT12,75249−40%

25Sanders County, MTMT14,06249−40%

26Lincoln County, MTMT22,32842−85%

27Phillips County, MTMT4,20341+486%

28Granite County, MTMT3,65835−20%

29Chouteau County, MTMT5,86533−59%

30Rosebud County, MTMT8,25329+32%

31Pondera County, MTMT6,07226−73%

32Liberty County, MTMT1,95726–

33McCone County, MTMT1,72022+22%

34Teton County, MTMT6,49619−54%

35Sweet Grass County, MTMT3,76219−53%

36Broadwater County, MTMT8,49318−45%

37Toole County, MTMT5,21116−64%

38Musselshell County, MTMT5,58213−75%

39Wheatland County, MTMT2,10013−79%

40Roosevelt County, MTMT10,2429+350%

41Carter County, MTMT1,3838−65%

42Powell County, MTMT7,1578−95%

43Glacier County, MTMT13,4635−94%

44Golden Valley County, MTMT8444–

45Powder River County, MTMT1,7814−50%

46Judith Basin County, MTMT2,1624−80%

47Valley County, MTMT7,3854−89%

48Blaine County, MTMT6,8603−70%

49Fallon County, MTMT2,9593−75%

50Sheridan County, MTMT3,4363−87%

SHOWING 1–50 OF 50

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES