RANKING · 2020 CENSUS · 43 SHOWN OF 43

Highest British population share, Idaho counties · 2020

Idaho counties ranked by the share of all residents who are British ancestry (2023 American Community Survey). A concentration measure: British residents as a percentage of total population. 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 SHAREVS 2000

01Madison County, IDID55,1722.5%–

02Lemhi County, IDID8,4741.9%–

03Franklin County, IDID15,8891.9%–

04Teton County, IDID13,2541.9%–

05Custer County, IDID4,6361.8%–

06Gem County, IDID21,7731.5%–

07Bonner County, IDID54,4201.4%–

08Bingham County, IDID51,1531.3%–

09Bonneville County, IDID135,7711.3%–

10Shoshone County, IDID14,1301.2%–

11Owyhee County, IDID12,6611.2%–

12Caribou County, IDID7,2521.2%–

13Kootenai County, IDID191,8641.2%–

14Cassia County, IDID26,3971.1%–

15Bannock County, IDID91,5911.1%–

16Ada County, IDID546,1411.1%–

17Idaho County, IDID17,8741.0%–

18Latah County, IDID41,8420.9%–

19Bear Lake County, IDID6,7270.9%–

20Payette County, IDID27,8240.8%–

21Lincoln County, IDID5,6030.8%–

22Boundary County, IDID13,9970.8%–

23Minidoka County, IDID22,9110.8%–

24Jefferson County, IDID35,2970.7%–

25Clearwater County, IDID9,1180.7%–

26Elmore County, IDID29,4650.6%–

27Valley County, IDID12,8310.6%–

28Fremont County, IDID14,2080.5%–

29Canyon County, IDID275,1230.5%–

30Jerome County, IDID26,3620.5%–

31Oneida County, IDID5,0850.5%–

32Blaine County, IDID25,5170.5%–

33Nez Perce County, IDID42,9050.4%–

34Twin Falls County, IDID97,5390.4%–

35Benewah County, IDID10,5080.3%–

36Gooding County, IDID16,4460.3%–

37Washington County, IDID11,5830.3%–

38Lewis County, IDID3,7040.2%–

39Boise County, IDID8,5450.1%–

40Adams County, IDID5,0130.1%–

41Camas County, IDID1,3160.1%–

42Power County, IDID8,2460.1%–

43Butte County, IDID2,7830.0%–

SHOWING 1–43 OF 43

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