RANKING · 2020 CENSUS · 44 SHOWN OF 44

Largest Mexican population, Idaho counties · 2020

Idaho counties ranked by the number of residents who are Mexican origin, 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.

Mexican Americans: full group profile →

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SAME RANKING BYCities States Metros

RELATEDHighest Mexican population share Largest Puerto Rican population Highest Puerto Rican population share Largest Cuban population Highest Cuban population share Largest Dominican population

YEAR2010 2020 2024

RANKPLACESTATEPOPMEXICAN POPULATIONVS 2010

01Canyon County, IDID275,12349,984+33%

02Ada County, IDID546,14130,076+44%

03Bonneville County, IDID135,77114,030+49%

04Twin Falls County, IDID97,53913,103+52%

05Bingham County, IDID51,1537,387+12%

06Jerome County, IDID26,3627,208+28%

07Minidoka County, IDID22,9116,772+26%

08Bannock County, IDID91,5916,245+41%

09Cassia County, IDID26,3975,893+21%

10Kootenai County, IDID191,8645,878+52%

11Blaine County, IDID25,5174,620+31%

12Gooding County, IDID16,4464,290+23%

13Payette County, IDID27,8243,905+36%

14Elmore County, IDID29,4653,566−0%

15Owyhee County, IDID12,6612,811+15%

16Jefferson County, IDID35,2972,750+29%

17Power County, IDID8,2462,382+16%

18Madison County, IDID55,1722,200+62%

19Washington County, IDID11,5831,710+18%

20Teton County, IDID13,2541,645+35%

21Lincoln County, IDID5,6031,529+33%

22Fremont County, IDID14,2081,480−2%

23Nez Perce County, IDID42,9051,326+110%

24Gem County, IDID21,7731,180+14%

25Latah County, IDID41,8421,159+22%

26Bonner County, IDID54,420828+21%

27Franklin County, IDID15,889533−16%

28Valley County, IDID12,831519+209%

29Caribou County, IDID7,252439+67%

30Idaho County, IDID17,874430+40%

31Boundary County, IDID13,997394+55%

32Shoshone County, IDID14,130337+24%

33Benewah County, IDID10,508315+64%

34Clark County, IDID783298−28%

35Boise County, IDID8,545218+45%

36Clearwater County, IDID9,118213+3%

37Bear Lake County, IDID6,727196+27%

38Oneida County, IDID5,085195+400%

39Lewis County, IDID3,704167+70%

40Lemhi County, IDID8,474160+11%

41Custer County, IDID4,636148+103%

42Butte County, IDID2,783102+42%

43Adams County, IDID5,01350+67%

44Camas County, IDID1,31628−83%

SHOWING 1–44 OF 44

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