RANKING · 2020 CENSUS · 46 SHOWN OF 46

Largest British population, Montana counties · 2020

Montana counties ranked by the number of residents who are British ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 46 counties in Montana that qualify, ranked against each other statewide.

British Americans: full group profile →

MontanaAll states All rankings

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

RANKPLACESTATEPOPBRITISH POPULATIONVS 2010

01Gallatin County, MTMT128,740978+139%

02Missoula County, MTMT123,513804+67%

03Yellowstone County, MTMT172,692779+130%

04Lewis and Clark County, MTMT75,331751+172%

05Cascade County, MTMT85,029613+46%

06Ravalli County, MTMT48,582544+353%

07Flathead County, MTMT115,429342−2%

08Lake County, MTMT33,392259+1750%

09Jefferson County, MTMT13,329127+958%

10Deer Lodge County, MTMT9,709118+237%

11Silver Bow County, MTMT36,118114+111%

12Park County, MTMT18,214113+77%

13Richland County, MTMT11,37796–

14Sanders County, MTMT14,06289+14%

15Fergus County, MTMT11,82575+1400%

16Stillwater County, MTMT9,44574+185%

17Broadwater County, MTMT8,49361+771%

18Beaverhead County, MTMT10,04357+714%

19Powell County, MTMT7,15756+273%

20Carbon County, MTMT11,46653−26%

21Madison County, MTMT10,02653+253%

22Lincoln County, MTMT22,32851+538%

23Granite County, MTMT3,65849+113%

24Custer County, MTMT12,03447+327%

25Glacier County, MTMT13,46347+96%

26Hill County, MTMT16,16746−8%

27Mineral County, MTMT5,18541+95%

28Sheridan County, MTMT3,43638+280%

29Teton County, MTMT6,49630+3%

30Chouteau County, MTMT5,86529−26%

31Sweet Grass County, MTMT3,76229+480%

32Musselshell County, MTMT5,58226+271%

33Pondera County, MTMT6,07223+130%

34Toole County, MTMT5,21117−6%

35Blaine County, MTMT6,86016+167%

36Judith Basin County, MTMT2,16214+56%

37Valley County, MTMT7,38511–

38Phillips County, MTMT4,20310–

39Prairie County, MTMT1,1127–

40Liberty County, MTMT1,9577+75%

41Big Horn County, MTMT12,7526–

42Carter County, MTMT1,3835–

43Garfield County, MTMT1,1484−20%

44Dawson County, MTMT8,6923−91%

45McCone County, MTMT1,7203–

46Golden Valley County, MTMT8441−50%

SHOWING 1–46 OF 46

Download CSV (full list, 46 rows)

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS