RANKING · 2010 CENSUS · 44 SHOWN OF 44

Largest Welsh population, Idaho counties · 2010

Idaho counties ranked by the number of residents who are Welsh 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 44 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

RANKPLACESTATEPOPWELSH POPULATIONVS 2000

01Ada County, IDID546,1415,941–

02Bannock County, IDID91,5911,999–

03Canyon County, IDID275,1231,872–

04Bonneville County, IDID135,7711,822–

05Kootenai County, IDID191,8641,354–

06Madison County, IDID55,1721,133–

07Latah County, IDID41,842798–

08Bingham County, IDID51,153656–

09Oneida County, IDID5,085638–

10Nez Perce County, IDID42,905581–

11Twin Falls County, IDID97,539510–

12Jefferson County, IDID35,297399–

13Valley County, IDID12,831344–

14Franklin County, IDID15,889327–

15Payette County, IDID27,824261–

16Gem County, IDID21,773260–

17Blaine County, IDID25,517252–

18Shoshone County, IDID14,130240–

19Cassia County, IDID26,397221–

20Gooding County, IDID16,446216–

21Jerome County, IDID26,362207–

22Elmore County, IDID29,465198–

23Fremont County, IDID14,208198–

24Power County, IDID8,246175–

25Lemhi County, IDID8,474174–

26Boundary County, IDID13,997141–

27Idaho County, IDID17,874140–

28Caribou County, IDID7,252139–

29Owyhee County, IDID12,661129–

30Bonner County, IDID54,420126–

31Butte County, IDID2,783126–

32Minidoka County, IDID22,911121–

33Custer County, IDID4,636109–

34Adams County, IDID5,013104–

35Bear Lake County, IDID6,72795–

36Teton County, IDID13,25486–

37Washington County, IDID11,58386–

38Clearwater County, IDID9,11884–

39Boise County, IDID8,54576–

40Benewah County, IDID10,50872–

41Lincoln County, IDID5,60321–

42Clark County, IDID78318–

43Lewis County, IDID3,70411–

44Camas County, IDID1,3164–

SHOWING 1–44 OF 44

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