RANKING · 2020 CENSUS · 98 SHOWN OF 98

Highest Czech population share, Iowa counties · 2020

Iowa counties ranked by the share of all residents who are Czech ancestry (2020 American Community Survey). A concentration measure: Czech residents as a percentage of total population. This list covers the 98 counties in Iowa that qualify, ranked against each other statewide. The median across all 98 is 0.9%.

Czech Americans: full group profile →

IowaAll states All rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPCZECH SHAREVS 2010

01Howard County, IAIA9,41511.7%−0.9 pts

02Tama County, IAIA16,7969.5%−2.2 pts

03Winneshiek County, IAIA19,7337.3%+0.8 pts

04Linn County, IAIA232,0285.1%−1.9 pts

05Benton County, IAIA26,0045.0%−1.7 pts

06Johnson County, IAIA160,0443.6%−0.7 pts

07Hancock County, IAIA10,5283.5%−0.4 pts

08Chickasaw County, IAIA11,6633.2%−1.0 pts

09Iowa County, IAIA16,5043.1%−2.5 pts

10Ringgold County, IAIA4,6422.5%+0.6 pts

11Jones County, IAIA21,2532.4%−2.2 pts

12Poweshiek County, IAIA18,3682.3%−0.3 pts

13Allamakee County, IAIA14,2382.3%+1.0 pts

14Cedar County, IAIA18,3592.3%−2.0 pts

15Pocahontas County, IAIA6,8192.3%−1.7 pts

16Delaware County, IAIA17,6742.1%+1.2 pts

17Floyd County, IAIA14,9012.0%+0.6 pts

18Marshall County, IAIA39,8901.9%−0.5 pts

19Mills County, IAIA14,7931.9%−2.2 pts

20Cerro Gordo County, IAIA42,3721.8%−0.8 pts

21Adams County, IAIA3,6171.8%+0.7 pts

22Cass County, IAIA12,9601.7%+0.8 pts

23Fayette County, IAIA19,0471.6%+0.1 pts

24Webster County, IAIA36,8381.5%−1.8 pts

25Black Hawk County, IAIA131,5321.5%−0.3 pts

26Pottawattamie County, IAIA92,9961.5%−0.1 pts

27Bremer County, IAIA25,2961.4%−0.1 pts

28Keokuk County, IAIA9,7971.4%+0.4 pts

29Worth County, IAIA7,3381.3%−1.1 pts

30Buchanan County, IAIA20,8831.3%−0.3 pts

31Emmet County, IAIA9,1071.2%+0.6 pts

32Cherokee County, IAIA11,3691.2%0.0 pts

33Union County, IAIA11,8291.2%−0.8 pts

34Warren County, IAIA57,3311.2%+0.1 pts

35Buena Vista County, IAIA20,4491.2%+0.6 pts

36Muscatine County, IAIA41,8531.2%0.0 pts

37Clayton County, IAIA16,8451.1%−1.5 pts

38Winnebago County, IAIA10,2511.1%−0.8 pts

39Hardin County, IAIA16,4551.1%−0.8 pts

40Grundy County, IAIA12,3611.1%−1.1 pts

41Harrison County, IAIA14,6231.1%−1.6 pts

42Washington County, IAIA22,6671.1%−1.9 pts

43Monroe County, IAIA7,4061.1%+0.6 pts

44Monona County, IAIA8,5391.0%−1.1 pts

45Polk County, IAIA516,5461.0%−0.1 pts

46Mitchell County, IAIA10,6501.0%−0.9 pts

47Madison County, IAIA17,2701.0%−0.8 pts

48Crawford County, IAIA16,2371.0%−0.7 pts

49Carroll County, IAIA20,3030.9%−0.1 pts

50Dallas County, IAIA118,4570.9%−0.2 pts

51Woodbury County, IAIA106,6490.9%−0.1 pts

52Story County, IAIA101,2910.9%−0.9 pts

53Appanoose County, IAIA12,0770.9%−0.5 pts

54Clinton County, IAIA46,0020.9%0.0 pts

55Scott County, IAIA175,2590.9%−0.3 pts

56Butler County, IAIA14,0490.8%−0.4 pts

57Page County, IAIA14,8560.8%+0.5 pts

58Shelby County, IAIA11,6890.8%−0.1 pts

59Wright County, IAIA12,8010.8%−0.3 pts

60Dubuque County, IAIA99,3810.8%−0.1 pts

61Sioux County, IAIA36,7740.8%+0.3 pts

62Lucas County, IAIA8,8470.8%+0.5 pts

63Mahaska County, IAIA21,8800.7%+0.2 pts

64Clarke County, IAIA9,5740.7%−0.1 pts

65Guthrie County, IAIA10,7820.7%0.0 pts

66Dickinson County, IAIA18,0770.7%−0.1 pts

67Franklin County, IAIA9,8680.7%−0.1 pts

68Des Moines County, IAIA38,0770.7%+0.4 pts

69Humboldt County, IAIA9,4090.7%−0.7 pts

70Audubon County, IAIA5,5090.7%+0.3 pts

71Plymouth County, IAIA25,6970.7%−0.1 pts

72Henry County, IAIA19,3490.6%−0.4 pts

73Clay County, IAIA16,2020.6%+0.3 pts

74Louisa County, IAIA10,4160.6%−0.3 pts

75Boone County, IAIA26,7990.6%−0.9 pts

76Calhoun County, IAIA9,5620.6%−0.3 pts

77Jackson County, IAIA19,2880.6%−0.4 pts

78Jasper County, IAIA38,1530.6%−0.5 pts

79Fremont County, IAIA6,5220.6%−0.8 pts

80Marion County, IAIA34,1920.5%−0.4 pts

81Decatur County, IAIA7,6550.5%+0.4 pts

82Lyon County, IAIA12,3540.4%+0.1 pts

83Montgomery County, IAIA10,0020.4%−0.4 pts

84Jefferson County, IAIA15,2910.4%−0.8 pts

85Hamilton County, IAIA14,9440.4%−1.0 pts

86Van Buren County, IAIA7,1310.4%−0.1 pts

87Sac County, IAIA9,5250.4%−0.4 pts

88Taylor County, IAIA5,8350.3%−1.2 pts

89Kossuth County, IAIA14,3220.3%−0.4 pts

90Adair County, IAIA7,4030.3%−1.4 pts

91Ida County, IAIA6,7770.3%−0.2 pts

92O'Brien County, IAIA14,2200.3%−0.2 pts

93Palo Alto County, IAIA8,8990.2%−1.0 pts

94Greene County, IAIA8,6580.2%−0.9 pts

95Lee County, IAIA32,3060.2%−0.1 pts

96Wapello County, IAIA35,2100.2%−0.3 pts

97Wayne County, IAIA6,7380.1%−0.1 pts

98Osceola County, IAIA5,9800.1%−0.3 pts

SHOWING 1–98 OF 98

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