RANKING · 2020 CENSUS · 44 SHOWN OF 44

Largest Irish population, Idaho counties · 2020

Idaho counties ranked by the number of residents who are 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 44 counties in Idaho that qualify, ranked against each other statewide. The median across all 44 is 1,238.

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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 POPULATIONVS 2010

01Ada County, IDID546,14150,109+11%

02Kootenai County, IDID191,86420,109−2%

03Canyon County, IDID275,12317,186+7%

04Bonneville County, IDID135,7717,311−7%

05Bannock County, IDID91,5917,182−4%

06Twin Falls County, IDID97,5396,731−17%

07Bonner County, IDID54,4206,174−1%

08Latah County, IDID41,8424,847−14%

09Nez Perce County, IDID42,9053,347−41%

10Elmore County, IDID29,4652,645−20%

11Bingham County, IDID51,1532,039−8%

12Payette County, IDID27,8241,958−17%

13Idaho County, IDID17,8741,952−26%

14Shoshone County, IDID14,1301,842−19%

15Madison County, IDID55,1721,738−12%

16Jerome County, IDID26,3621,670+12%

17Valley County, IDID12,8311,639+30%

18Gem County, IDID21,7731,634−21%

19Jefferson County, IDID35,2971,600+23%

20Blaine County, IDID25,5171,464−40%

21Washington County, IDID11,5831,240−17%

22Gooding County, IDID16,4461,238−28%

23Clearwater County, IDID9,1181,192−23%

24Benewah County, IDID10,5081,122−31%

25Teton County, IDID13,2541,114−9%

26Minidoka County, IDID22,9111,100−14%

27Fremont County, IDID14,2081,012+3%

28Cassia County, IDID26,397994−12%

29Boundary County, IDID13,997962−20%

30Lemhi County, IDID8,474877−14%

31Owyhee County, IDID12,661833−22%

32Boise County, IDID8,545748−4%

33Adams County, IDID5,013582+1%

34Custer County, IDID4,636521−37%

35Power County, IDID8,246484+39%

36Lewis County, IDID3,704431−31%

37Franklin County, IDID15,889421+4%

38Bear Lake County, IDID6,727311+18%

39Lincoln County, IDID5,603291−16%

40Caribou County, IDID7,252246−28%

41Oneida County, IDID5,085154−16%

42Butte County, IDID2,783147−43%

43Clark County, IDID78353+165%

44Camas County, IDID1,31651−52%

SHOWING 1–44 OF 44

Download CSV (full list, 44 rows)

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