RANKING · 2020 CENSUS · 44 SHOWN OF 44

Largest American population, Idaho counties · 2020

Idaho counties ranked by the number of residents who are American 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.

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SAME RANKING BYCities States Metros

RELATEDHighest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share Largest Iraqi population

YEAR2010 2020 2024

RANKPLACESTATEPOPAMERICAN POPULATIONVS 2010

01Ada County, IDID546,14121,358−35%

02Canyon County, IDID275,12312,264−64%

03Bonneville County, IDID135,77110,922+10%

04Twin Falls County, IDID97,5398,398+61%

05Kootenai County, IDID191,8646,873−59%

06Bannock County, IDID91,5915,470−3%

07Bingham County, IDID51,1533,877+48%

08Jefferson County, IDID35,2972,975+47%

09Bonner County, IDID54,4202,871+42%

10Jerome County, IDID26,3622,440+30%

11Nez Perce County, IDID42,9052,365−21%

12Madison County, IDID55,1722,297+11%

13Cassia County, IDID26,3972,174−7%

14Minidoka County, IDID22,9112,143+8%

15Latah County, IDID41,8421,939+76%

16Gem County, IDID21,7731,927−27%

17Boundary County, IDID13,9971,812+127%

18Elmore County, IDID29,4651,782−26%

19Payette County, IDID27,8241,337−69%

20Franklin County, IDID15,8891,327+33%

21Idaho County, IDID17,8741,322+177%

22Fremont County, IDID14,208898+13%

23Gooding County, IDID16,446814−4%

24Washington County, IDID11,583655−32%

25Owyhee County, IDID12,661647−71%

26Caribou County, IDID7,252644+116%

27Blaine County, IDID25,517583−65%

28Power County, IDID8,246574+4%

29Shoshone County, IDID14,130548−4%

30Clearwater County, IDID9,118543−8%

31Valley County, IDID12,831538−28%

32Lemhi County, IDID8,474493−37%

33Benewah County, IDID10,508461+45%

34Teton County, IDID13,254418+6%

35Boise County, IDID8,545388−36%

36Lincoln County, IDID5,603358+17%

37Bear Lake County, IDID6,727338−30%

38Oneida County, IDID5,085335−38%

39Adams County, IDID5,013298+54%

40Lewis County, IDID3,704212+88%

41Butte County, IDID2,783197−35%

42Custer County, IDID4,636187+57%

43Clark County, IDID783119+113%

44Camas County, IDID1,31663−74%

SHOWING 1–44 OF 44

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