RANKING · 2020 CENSUS · 44 SHOWN OF 44

Highest Irish population share, Idaho counties · 2020

Idaho counties ranked by the share of all residents who are Irish ancestry (2023 American Community Survey). A concentration measure: Irish residents as a percentage of total population. 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

RANKPLACESTATEPOPIRISH SHAREVS 2000

01Valley County, IDID12,83114.8%–

02Shoshone County, IDID14,13014.5%–

03Adams County, IDID5,01313.9%–

04Bonner County, IDID54,42013.8%–

05Clearwater County, IDID9,11813.6%–

06Kootenai County, IDID191,86412.4%–

07Custer County, IDID4,63612.4%–

08Washington County, IDID11,58312.2%–

09Benewah County, IDID10,50812.2%–

10Latah County, IDID41,84212.1%–

11Idaho County, IDID17,87411.8%–

12Lewis County, IDID3,70411.2%–

13Lemhi County, IDID8,47411.1%–

14Ada County, IDID546,14110.7%–

15Boise County, IDID8,5459.8%–

16Elmore County, IDID29,4659.8%–

17Teton County, IDID13,2549.5%–

18Gem County, IDID21,7739.2%–

19Bannock County, IDID91,5918.3%–

20Nez Perce County, IDID42,9058.3%–

21Payette County, IDID27,8248.3%–

22Gooding County, IDID16,4468.1%–

23Boundary County, IDID13,9977.9%–

24Twin Falls County, IDID97,5397.8%–

25Fremont County, IDID14,2087.7%–

26Canyon County, IDID275,1237.7%–

27Owyhee County, IDID12,6617.1%–

28Jerome County, IDID26,3626.9%–

29Blaine County, IDID25,5176.4%–

30Power County, IDID8,2466.3%–

31Bonneville County, IDID135,7716.3%–

32Clark County, IDID7836.0%–

33Butte County, IDID2,7835.6%–

34Jefferson County, IDID35,2975.5%–

35Lincoln County, IDID5,6035.4%–

36Minidoka County, IDID22,9115.3%–

37Bear Lake County, IDID6,7275.1%–

38Camas County, IDID1,3164.8%–

39Bingham County, IDID51,1534.4%–

40Madison County, IDID55,1724.4%–

41Cassia County, IDID26,3974.2%–

42Caribou County, IDID7,2523.5%–

43Oneida County, IDID5,0853.5%–

44Franklin County, IDID15,8893.1%–

SHOWING 1–44 OF 44

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