RANKING · 2020 CENSUS · 50 SHOWN OF 50

Highest Welsh population share, Montana counties · 2020

Montana counties ranked by the share of all residents who are Welsh ancestry (2023 American Community Survey). A concentration measure: Welsh residents as a percentage of total population. This list covers the 50 counties in Montana that qualify, ranked against each other statewide.

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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 SHAREVS 2000

01Dawson County, MTMT8,6923.0%–

02Liberty County, MTMT1,9572.5%–

03Madison County, MTMT10,0262.5%–

04Meagher County, MTMT2,1372.2%–

05Sanders County, MTMT14,0621.7%–

06Garfield County, MTMT1,1481.6%–

07Custer County, MTMT12,0341.6%–

08Lewis and Clark County, MTMT75,3311.5%–

09Deer Lodge County, MTMT9,7091.5%–

10Sweet Grass County, MTMT3,7621.4%–

11Ravalli County, MTMT48,5821.4%–

12Silver Bow County, MTMT36,1181.4%–

13Beaverhead County, MTMT10,0431.4%–

14Mineral County, MTMT5,1851.3%–

15Broadwater County, MTMT8,4931.3%–

16Stillwater County, MTMT9,4451.3%–

17Chouteau County, MTMT5,8651.2%–

18Granite County, MTMT3,6581.2%–

19Cascade County, MTMT85,0291.1%–

20Powell County, MTMT7,1571.1%–

21Carbon County, MTMT11,4661.1%–

22Gallatin County, MTMT128,7401.0%–

23Toole County, MTMT5,2111.0%–

24Golden Valley County, MTMT8441.0%–

25Carter County, MTMT1,3830.9%–

26Jefferson County, MTMT13,3290.9%–

27Lake County, MTMT33,3920.8%–

28Missoula County, MTMT123,5130.8%–

29Flathead County, MTMT115,4290.8%–

30Teton County, MTMT6,4960.8%–

31Yellowstone County, MTMT172,6920.7%–

32Lincoln County, MTMT22,3280.7%–

33Richland County, MTMT11,3770.7%–

34Powder River County, MTMT1,7810.7%–

35Fergus County, MTMT11,8250.7%–

36Park County, MTMT18,2140.7%–

37Judith Basin County, MTMT2,1620.7%–

38McCone County, MTMT1,7200.6%–

39Sheridan County, MTMT3,4360.5%–

40Rosebud County, MTMT8,2530.5%–

41Glacier County, MTMT13,4630.4%–

42Big Horn County, MTMT12,7520.3%–

43Phillips County, MTMT4,2030.3%–

44Blaine County, MTMT6,8600.3%–

45Valley County, MTMT7,3850.2%–

46Pondera County, MTMT6,0720.2%–

47Hill County, MTMT16,1670.2%–

48Fallon County, MTMT2,9590.1%–

49Musselshell County, MTMT5,5820.1%–

50Roosevelt County, MTMT10,2420.1%–

SHOWING 1–50 OF 50

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