RANKING · 2010 CENSUS · 40 SHOWN OF 40

Highest British population share, Idaho counties · 2010

Idaho counties ranked by the share of all residents who are British ancestry (2010 American Community Survey). A concentration measure: British residents as a percentage of total population. This list covers the 40 counties in Idaho that qualify, ranked against each other statewide. The median across all 40 is 0.5%.

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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 –

01Madison County, IDID55,1721.8%–

02Boise County, IDID8,5451.6%–

03Franklin County, IDID15,8891.3%–

04Oneida County, IDID5,0851.3%–

05Blaine County, IDID25,5171.2%–

06Butte County, IDID2,7831.0%–

07Gooding County, IDID16,4460.9%–

08Jefferson County, IDID35,2970.8%–

09Latah County, IDID41,8420.8%–

10Teton County, IDID13,2540.8%–

11Ada County, IDID546,1410.7%–

12Elmore County, IDID29,4650.7%–

13Jerome County, IDID26,3620.7%–

14Bonneville County, IDID135,7710.7%–

15Owyhee County, IDID12,6610.7%–

16Bannock County, IDID91,5910.7%–

17Bonner County, IDID54,4200.6%–

18Gem County, IDID21,7730.6%–

19Valley County, IDID12,8310.6%–

20Clearwater County, IDID9,1180.5%–

21Twin Falls County, IDID97,5390.5%–

22Canyon County, IDID275,1230.5%–

23Adams County, IDID5,0130.5%–

24Minidoka County, IDID22,9110.5%–

25Lemhi County, IDID8,4740.4%–

26Bear Lake County, IDID6,7270.4%–

27Cassia County, IDID26,3970.4%–

28Custer County, IDID4,6360.4%–

29Power County, IDID8,2460.3%–

30Benewah County, IDID10,5080.3%–

31Nez Perce County, IDID42,9050.3%–

32Kootenai County, IDID191,8640.3%–

33Fremont County, IDID14,2080.3%–

34Bingham County, IDID51,1530.3%–

35Payette County, IDID27,8240.2%–

36Caribou County, IDID7,2520.2%–

37Lewis County, IDID3,7040.2%–

38Boundary County, IDID13,9970.1%–

39Idaho County, IDID17,8740.1%–

40Shoshone County, IDID14,1300.0%–

SHOWING 1–40 OF 40

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