RANKING · 2020 CENSUS · 43 SHOWN OF 43

Largest British population, Idaho counties · 2020

Idaho counties ranked by the number of residents who are British ancestry, from the 2023 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 43 counties in Idaho that qualify, ranked against each other statewide.

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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

RANKPLACESTATEPOPBRITISH POPULATIONVS 2000

01Ada County, IDID546,1414,949–

02Kootenai County, IDID191,8641,928–

03Bonneville County, IDID135,7711,471–

04Canyon County, IDID275,1231,192–

05Madison County, IDID55,172977–

06Bannock County, IDID91,591935–

07Bonner County, IDID54,420635–

08Bingham County, IDID51,153601–

09Latah County, IDID41,842372–

10Twin Falls County, IDID97,539339–

11Gem County, IDID21,773266–

12Cassia County, IDID26,397264–

13Franklin County, IDID15,889263–

14Teton County, IDID13,254218–

15Jefferson County, IDID35,297216–

16Payette County, IDID27,824191–

17Nez Perce County, IDID42,905176–

18Idaho County, IDID17,874171–

19Elmore County, IDID29,465170–

20Minidoka County, IDID22,911158–

21Shoshone County, IDID14,130158–

22Lemhi County, IDID8,474153–

23Owyhee County, IDID12,661144–

24Jerome County, IDID26,362120–

25Blaine County, IDID25,517107–

26Boundary County, IDID13,99797–

27Caribou County, IDID7,25286–

28Custer County, IDID4,63677–

29Fremont County, IDID14,20871–

30Valley County, IDID12,83162–

31Clearwater County, IDID9,11859–

32Bear Lake County, IDID6,72754–

33Gooding County, IDID16,44646–

34Lincoln County, IDID5,60343–

35Benewah County, IDID10,50830–

36Washington County, IDID11,58327–

37Oneida County, IDID5,08521–

38Boise County, IDID8,54511–

39Lewis County, IDID3,7048–

40Power County, IDID8,2467–

41Adams County, IDID5,0135–

42Camas County, IDID1,3161–

43Butte County, IDID2,7831–

SHOWING 1–43 OF 43

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