RANKING · 2020 CENSUS · 43 SHOWN OF 43

Largest Scotch-Irish population, Idaho counties · 2020

Idaho counties ranked by the number of residents who are Scotch-Irish 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

RANKPLACESTATEPOPSCOTCH-IRISH POPULATIONVS 2000

01Ada County, IDID546,1414,063–

02Kootenai County, IDID191,8642,427–

03Canyon County, IDID275,1231,624–

04Bonneville County, IDID135,7711,075–

05Bonner County, IDID54,4201,012–

06Bannock County, IDID91,591859–

07Latah County, IDID41,842592–

08Twin Falls County, IDID97,539533–

09Nez Perce County, IDID42,905348–

10Madison County, IDID55,172312–

11Blaine County, IDID25,517281–

12Elmore County, IDID29,465266–

13Jefferson County, IDID35,297256–

14Payette County, IDID27,824210–

15Minidoka County, IDID22,911192–

16Bingham County, IDID51,153191–

17Gem County, IDID21,773189–

18Idaho County, IDID17,874187–

19Boundary County, IDID13,997183–

20Shoshone County, IDID14,130183–

21Boise County, IDID8,545178–

22Jerome County, IDID26,362170–

23Clearwater County, IDID9,118155–

24Washington County, IDID11,583148–

25Valley County, IDID12,831140–

26Cassia County, IDID26,397115–

27Benewah County, IDID10,50897–

28Teton County, IDID13,25491–

29Fremont County, IDID14,20889–

30Gooding County, IDID16,44681–

31Adams County, IDID5,01376–

32Power County, IDID8,24665–

33Owyhee County, IDID12,66162–

34Franklin County, IDID15,88959–

35Lewis County, IDID3,70459–

36Lincoln County, IDID5,60351–

37Custer County, IDID4,63638–

38Bear Lake County, IDID6,72738–

39Caribou County, IDID7,25235–

40Butte County, IDID2,78321–

41Clark County, IDID78315–

42Lemhi County, IDID8,47414–

43Camas County, IDID1,3164–

SHOWING 1–43 OF 43

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