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 2020 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.

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, IDID546,1414,063−51%

02Kootenai County, IDID191,8642,427−37%

03Canyon County, IDID275,1231,624−46%

04Bonneville County, IDID135,7711,075−28%

05Bonner County, IDID54,4201,012−28%

06Bannock County, IDID91,591859−43%

07Latah County, IDID41,842592−48%

08Twin Falls County, IDID97,539533−43%

09Nez Perce County, IDID42,905348−64%

10Madison County, IDID55,172312−42%

11Blaine County, IDID25,517281−51%

12Elmore County, IDID29,465266−20%

13Jefferson County, IDID35,297256+83%

14Payette County, IDID27,824210−51%

15Minidoka County, IDID22,911192−45%

16Bingham County, IDID51,153191−69%

17Gem County, IDID21,773189−58%

18Idaho County, IDID17,874187−59%

19Boundary County, IDID13,997183−57%

20Shoshone County, IDID14,130183−47%

21Boise County, IDID8,545178+24%

22Jerome County, IDID26,362170−50%

23Clearwater County, IDID9,118155−49%

24Washington County, IDID11,583148−33%

25Valley County, IDID12,831140−57%

26Cassia County, IDID26,397115−50%

27Benewah County, IDID10,50897−49%

28Teton County, IDID13,25491−65%

29Fremont County, IDID14,20889+7%

30Gooding County, IDID16,44681−55%

31Adams County, IDID5,01376−55%

32Power County, IDID8,24665+41%

33Owyhee County, IDID12,66162−49%

34Franklin County, IDID15,88959−67%

35Lewis County, IDID3,70459−42%

36Lincoln County, IDID5,60351−53%

37Bear Lake County, IDID6,72738−34%

38Custer County, IDID4,63638−51%

39Caribou County, IDID7,25235+94%

40Butte County, IDID2,78321−83%

41Clark County, IDID78315−21%

42Lemhi County, IDID8,47414−93%

43Camas County, IDID1,3164−87%

SHOWING 1–43 OF 43

Download CSV (full list, 43 rows)

UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS