RANKING · 2020 CENSUS · 39 SHOWN OF 39

Largest Czech population, Idaho counties · 2020

Idaho counties ranked by the number of residents who are Czech 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 39 counties in Idaho that qualify, ranked against each other statewide. The median across all 39 is 49.

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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

RANKPLACESTATEPOPCZECH POPULATIONVS 2010

01Ada County, IDID546,1411,689−37%

02Canyon County, IDID275,1231,111+69%

03Kootenai County, IDID191,864683−27%

04Bonneville County, IDID135,771394+46%

05Twin Falls County, IDID97,539295−42%

06Blaine County, IDID25,517234−16%

07Latah County, IDID41,842157−46%

08Teton County, IDID13,254152+7500%

09Jerome County, IDID26,362115+2200%

10Nez Perce County, IDID42,905111−41%

11Bannock County, IDID91,591108−74%

12Bonner County, IDID54,420104−32%

13Shoshone County, IDID14,13073−8%

14Payette County, IDID27,82468−19%

15Boundary County, IDID13,99766−39%

16Valley County, IDID12,83156+124%

17Idaho County, IDID17,87453−37%

18Cassia County, IDID26,39752−45%

19Power County, IDID8,24650+163%

20Elmore County, IDID29,46549−67%

21Owyhee County, IDID12,66147+31%

22Boise County, IDID8,54546+557%

23Gooding County, IDID16,44645−59%

24Benewah County, IDID10,50836+1100%

25Jefferson County, IDID35,29733−44%

26Clearwater County, IDID9,11826−63%

27Bingham County, IDID51,15326−90%

28Bear Lake County, IDID6,72716−48%

29Lemhi County, IDID8,47413+44%

30Lewis County, IDID3,70413−55%

31Gem County, IDID21,77312+33%

32Minidoka County, IDID22,91111−96%

33Adams County, IDID5,01310+233%

34Lincoln County, IDID5,6039+200%

35Washington County, IDID11,5834–

36Custer County, IDID4,6363−94%

37Fremont County, IDID14,2083−86%

38Caribou County, IDID7,2522−88%

39Camas County, IDID1,3161–

SHOWING 1–39 OF 39

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