RANKING · 2024 ACS · 44 SHOWN OF 44

Largest Scotch-Irish population, Idaho counties

Idaho counties ranked by the number of residents who are Scotch-Irish ancestry, from the 2024 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.

Scotch-Irish Americans: full group profile →

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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 2010

01Ada County, IDID546,1414,507−45%

02Kootenai County, IDID191,8642,265−41%

03Canyon County, IDID275,1231,702−43%

04Bonneville County, IDID135,771959−36%

05Bannock County, IDID91,591776−48%

06Bonner County, IDID54,420643−54%

07Latah County, IDID41,842530−53%

08Twin Falls County, IDID97,539481−49%

09Blaine County, IDID25,517445−22%

10Gem County, IDID21,773373−17%

11Idaho County, IDID17,874344−24%

12Jefferson County, IDID35,297317+126%

13Bingham County, IDID51,153256−59%

14Elmore County, IDID29,465217−35%

15Nez Perce County, IDID42,905214−78%

16Jerome County, IDID26,362212−38%

17Shoshone County, IDID14,130205−40%

18Lemhi County, IDID8,474177−6%

19Madison County, IDID55,172172−68%

20Owyhee County, IDID12,661156+29%

21Cassia County, IDID26,397137−41%

22Teton County, IDID13,254128−51%

23Benewah County, IDID10,508119−38%

24Payette County, IDID27,824119−72%

25Minidoka County, IDID22,911113−68%

26Washington County, IDID11,583101−54%

27Gooding County, IDID16,44688−51%

28Clearwater County, IDID9,11884−73%

29Boundary County, IDID13,99784−80%

30Custer County, IDID4,63682+6%

31Fremont County, IDID14,20879−5%

32Boise County, IDID8,54572−50%

33Bear Lake County, IDID6,72769+19%

34Lincoln County, IDID5,60369−36%

35Valley County, IDID12,83157−82%

36Franklin County, IDID15,88941−77%

37Adams County, IDID5,01335−79%

38Caribou County, IDID7,25230+67%

39Lewis County, IDID3,70425−75%

40Clark County, IDID78320+5%

41Camas County, IDID1,31613−57%

42Oneida County, IDID5,0859−40%

43Butte County, IDID2,7836−95%

44Power County, IDID8,2464−91%

SHOWING 1–44 OF 44

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES