RANKING · 2020 CENSUS · 44 SHOWN OF 44

Highest Slovak population share, Iowa counties · 2020

Iowa counties ranked by the share of all residents who are Slovak ancestry (2023 American Community Survey). A concentration measure: Slovak residents as a percentage of total population. This list covers the 44 counties in Iowa that qualify, ranked against each other statewide.

IowaAll states All rankings

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 SHAREVS 2000

01Emmet County, IAIA9,1070.3%–

02Des Moines County, IAIA38,0770.3%–

03Jones County, IAIA21,2530.3%–

04Fayette County, IAIA19,0470.2%–

05Monroe County, IAIA7,4060.2%–

06Poweshiek County, IAIA18,3680.1%–

07Mahaska County, IAIA21,8800.1%–

08Boone County, IAIA26,7990.1%–

09Dallas County, IAIA118,4570.1%–

10Scott County, IAIA175,2590.1%–

11Marshall County, IAIA39,8900.1%–

12Johnson County, IAIA160,0440.1%–

13Jasper County, IAIA38,1530.1%–

14Linn County, IAIA232,0280.1%–

15Humboldt County, IAIA9,4090.1%–

16Story County, IAIA101,2910.1%–

17Adair County, IAIA7,4030.1%–

18Adams County, IAIA3,6170.1%–

19Cedar County, IAIA18,3590.1%–

20Bremer County, IAIA25,2960.1%–

21Polk County, IAIA516,5460.0%–

22Jefferson County, IAIA15,2910.0%–

23Howard County, IAIA9,4150.0%–

24Marion County, IAIA34,1920.0%–

25Muscatine County, IAIA41,8530.0%–

26Webster County, IAIA36,8380.0%–

27Dickinson County, IAIA18,0770.0%–

28Cherokee County, IAIA11,3690.0%–

29Dubuque County, IAIA99,3810.0%–

30Cerro Gordo County, IAIA42,3720.0%–

31Black Hawk County, IAIA131,5320.0%–

32Wayne County, IAIA6,7380.0%–

33Iowa County, IAIA16,5040.0%–

34Montgomery County, IAIA10,0020.0%–

35Lee County, IAIA32,3060.0%–

36Henry County, IAIA19,3490.0%–

37Crawford County, IAIA16,2370.0%–

38Grundy County, IAIA12,3610.0%–

39Clinton County, IAIA46,0020.0%–

40Washington County, IAIA22,6670.0%–

41Woodbury County, IAIA106,6490.0%–

42Hamilton County, IAIA14,9440.0%–

43Mills County, IAIA14,7930.0%–

44Floyd County, IAIA14,9010.0%–

SHOWING 1–44 OF 44

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UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES