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. The median across all 50 is 49. Biggest climber in the top 100 since 2020: Phillips County, MT, up 16 places to #27.

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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

01▲1Yellowstone County, MTMT172,6921,077−28%

02▼1Gallatin County, MTMT128,7401,039−25%

03▲1Missoula County, MTMT123,5131,038+18%

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

05▼2Lewis and Clark County, MTMT75,331780+24%

06▲1Ravalli County, MTMT48,582591−21%

07▼2Cascade County, MTMT85,029540−19%

08Silver Bow County, MTMT36,118204−56%

09▲4Custer County, MTMT12,034131−1%

10▼1Dawson County, MTMT8,692119+231%

11▼1Lake County, MTMT33,392117−45%

12▲3Deer Lodge County, MTMT9,709101−12%

13▲7Jefferson County, MTMT13,32994−41%

14▲4Carbon County, MTMT11,46687−34%

15▲2Stillwater County, MTMT9,44579−10%

16▼5Madison County, MTMT10,02675+6%

17▲6Richland County, MTMT11,37770+67%

18▲6Fergus County, MTMT11,82566−13%

19▼3Beaverhead County, MTMT10,04360−74%

20▼1Park County, MTMT18,21458−64%

21▲13Meagher County, MTMT2,13757+148%

22▲14Hill County, MTMT16,16754−43%

23▲5Mineral County, MTMT5,18554−25%

24▲9Big Horn County, MTMT12,75249−40%

25▼13Sanders County, MTMT14,06249−40%

26▼12Lincoln County, MTMT22,32842−85%

27▲16Phillips County, MTMT4,20341+486%

28▲7Granite County, MTMT3,65835−20%

29▼4Chouteau County, MTMT5,86533−59%

30▲2Rosebud County, MTMT8,25329+32%

31▲13Pondera County, MTMT6,07226−73%

32▼6Liberty County, MTMT1,95726–

33▲12McCone County, MTMT1,72022+22%

34▼3Teton County, MTMT6,49619−54%

35▼6Sweet Grass County, MTMT3,76219−53%

36▼15Broadwater County, MTMT8,49318−45%

37▼7Toole County, MTMT5,21116−64%

38▲11Musselshell County, MTMT5,58213−75%

39Wheatland County, MTMT2,10013−79%

40▲7Roosevelt County, MTMT10,2429+350%

41▲1Carter County, MTMT1,3838−65%

42▼20Powell County, MTMT7,1578−95%

43▼16Glacier County, MTMT13,4635−94%

44▲4Golden Valley County, MTMT8444–

45▲1Powder River County, MTMT1,7814−50%

46▼5Judith Basin County, MTMT2,1624−80%

47▼9Valley County, MTMT7,3854−89%

48▼9Blaine County, MTMT6,8603−70%

49▲1Fallon County, MTMT2,9593−75%

50▼13Sheridan County, MTMT3,4363−87%

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES