RANKING · 2020 CENSUS · 44 SHOWN OF 44

Largest Slovak population, Iowa counties · 2020

Iowa counties ranked by the number of residents who are Slovak 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 Iowa that qualify, ranked against each other statewide. The median across all 44 is 13.

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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

RANKPLACESTATEPOPSLOVAK POPULATIONVS 2010

01Polk County, IAIA516,546242−47%

02Scott County, IAIA175,259180+36%

03Linn County, IAIA232,028160+30%

04Johnson County, IAIA160,044130−36%

05Des Moines County, IAIA38,077121+203%

06Dallas County, IAIA118,457107+365%

07Jones County, IAIA21,25360–

08Story County, IAIA101,29158+115%

09Black Hawk County, IAIA131,53243−74%

10Marshall County, IAIA39,89040+233%

11Fayette County, IAIA19,04737–

12Boone County, IAIA26,79936–

13Dubuque County, IAIA99,38132+45%

14Emmet County, IAIA9,10732+33%

15Mahaska County, IAIA21,88031–

16Jasper County, IAIA38,15327–

17Poweshiek County, IAIA18,36826+136%

18Muscatine County, IAIA41,85318+100%

19Webster County, IAIA36,83815+50%

20Cerro Gordo County, IAIA42,37214−63%

21Marion County, IAIA34,19214−36%

22Bremer County, IAIA25,29613–

23Monroe County, IAIA7,40613−77%

24Cedar County, IAIA18,35910–

25Jefferson County, IAIA15,2919−85%

26Lee County, IAIA32,3069–

27Woodbury County, IAIA106,6498−82%

28Dickinson County, IAIA18,0777+40%

29Clinton County, IAIA46,0026+200%

30Humboldt County, IAIA9,40960%

31Henry County, IAIA19,3495−69%

32Iowa County, IAIA16,5045–

33Adair County, IAIA7,4034–

34Cherokee County, IAIA11,3694–

35Howard County, IAIA9,4154−56%

36Crawford County, IAIA16,2373−63%

37Montgomery County, IAIA10,0023–

38Adams County, IAIA3,6172–

39Grundy County, IAIA12,3612–

40Washington County, IAIA22,6672−94%

41Wayne County, IAIA6,7382–

42Floyd County, IAIA14,9011–

43Hamilton County, IAIA14,9441–

44Mills County, IAIA14,7931–

SHOWING 1–44 OF 44

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