RANKING · 2010 CENSUS · 44 SHOWN OF 44

Highest Irish population share, Idaho counties · 2010

Idaho counties ranked by the share of all residents who are Irish ancestry (2010 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. The median across all 44 is 10.9%.

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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 –

01Custer County, IDID4,63619.5%–

02Clearwater County, IDID9,11817.8%–

03Shoshone County, IDID14,13017.6%–

04Benewah County, IDID10,50817.5%–

05Idaho County, IDID17,87416.6%–

06Lewis County, IDID3,70416.5%–

07Latah County, IDID41,84215.3%–

08Bonner County, IDID54,42015.3%–

09Kootenai County, IDID191,86415.2%–

10Washington County, IDID11,58314.8%–

11Adams County, IDID5,01314.6%–

12Nez Perce County, IDID42,90514.5%–

13Teton County, IDID13,25413.0%–

14Lemhi County, IDID8,47413.0%–

15Valley County, IDID12,83112.8%–

16Elmore County, IDID29,46512.4%–

17Gem County, IDID21,77312.3%–

18Ada County, IDID546,14111.8%–

19Blaine County, IDID25,51711.4%–

20Gooding County, IDID16,44611.3%–

21Boundary County, IDID13,99711.2%–

22Boise County, IDID8,54510.9%–

23Twin Falls County, IDID97,53910.8%–

24Payette County, IDID27,82410.5%–

25Owyhee County, IDID12,6619.4%–

26Bannock County, IDID91,5919.3%–

27Butte County, IDID2,7839.1%–

28Canyon County, IDID275,1238.8%–

29Camas County, IDID1,3168.8%–

30Bonneville County, IDID135,7717.8%–

31Fremont County, IDID14,2087.6%–

32Jerome County, IDID26,3627.0%–

33Lincoln County, IDID5,6036.9%–

34Minidoka County, IDID22,9116.5%–

35Madison County, IDID55,1725.4%–

36Jefferson County, IDID35,2975.3%–

37Cassia County, IDID26,3975.1%–

38Caribou County, IDID7,2525.0%–

39Bingham County, IDID51,1535.0%–

40Power County, IDID8,2464.5%–

41Oneida County, IDID5,0854.4%–

42Bear Lake County, IDID6,7274.4%–

43Franklin County, IDID15,8893.2%–

44Clark County, IDID7832.3%–

SHOWING 1–44 OF 44

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS