RANKING · 2010 CENSUS · 99 SHOWN OF 99

Highest Dutch population share, Iowa counties · 2010

Iowa counties ranked by the share of all residents who are Dutch ancestry (2023 American Community Survey). A concentration measure: Dutch residents as a percentage of total population. This list covers the 99 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

RANKPLACESTATEPOPDUTCH SHAREVS 2000

01Sioux County, IAIA36,77451.4%–

02Lyon County, IAIA12,35431.9%–

03Marion County, IAIA34,19228.0%–

04Mahaska County, IAIA21,88023.2%–

05O'Brien County, IAIA14,22022.7%–

06Osceola County, IAIA5,98022.6%–

07Jasper County, IAIA38,15313.1%–

08Monroe County, IAIA7,4069.7%–

09Davis County, IAIA9,2309.1%–

10Plymouth County, IAIA25,6977.3%–

11Keokuk County, IAIA9,7976.8%–

12Dickinson County, IAIA18,0776.6%–

13Poweshiek County, IAIA18,3686.6%–

14Greene County, IAIA8,6586.2%–

15Grundy County, IAIA12,3616.1%–

16Clay County, IAIA16,2026.0%–

17Warren County, IAIA57,3315.7%–

18Decatur County, IAIA7,6555.5%–

19Wapello County, IAIA35,2105.4%–

20Appanoose County, IAIA12,0775.3%–

21Clinton County, IAIA46,0025.3%–

22Wayne County, IAIA6,7385.3%–

23Butler County, IAIA14,0495.2%–

24Union County, IAIA11,8295.1%–

25Hancock County, IAIA10,5285.1%–

26Lucas County, IAIA8,8475.1%–

27Dallas County, IAIA118,4574.9%–

28Jefferson County, IAIA15,2914.7%–

29Hamilton County, IAIA14,9444.7%–

30Polk County, IAIA516,5464.6%–

31Monona County, IAIA8,5394.6%–

32Madison County, IAIA17,2704.3%–

33Woodbury County, IAIA106,6494.3%–

34Clarke County, IAIA9,5744.2%–

35Ringgold County, IAIA4,6424.2%–

36Van Buren County, IAIA7,1314.1%–

37Buchanan County, IAIA20,8834.1%–

38Iowa County, IAIA16,5043.7%–

39Ida County, IAIA6,7773.7%–

40Palo Alto County, IAIA8,8993.6%–

41Marshall County, IAIA39,8903.6%–

42Linn County, IAIA232,0283.6%–

43Taylor County, IAIA5,8353.6%–

44Henry County, IAIA19,3493.5%–

45Cedar County, IAIA18,3593.4%–

46Benton County, IAIA26,0043.4%–

47Mills County, IAIA14,7933.4%–

48Story County, IAIA101,2913.3%–

49Cherokee County, IAIA11,3693.3%–

50Washington County, IAIA22,6673.3%–

51Bremer County, IAIA25,2963.3%–

52Franklin County, IAIA9,8683.2%–

53Louisa County, IAIA10,4163.2%–

54Guthrie County, IAIA10,7823.2%–

55Muscatine County, IAIA41,8533.1%–

56Hardin County, IAIA16,4553.1%–

57Harrison County, IAIA14,6233.1%–

58Adams County, IAIA3,6173.0%–

59Fremont County, IAIA6,5223.0%–

60Floyd County, IAIA14,9013.0%–

61Wright County, IAIA12,8013.0%–

62Emmet County, IAIA9,1073.0%–

63Delaware County, IAIA17,6742.9%–

64Johnson County, IAIA160,0442.9%–

65Shelby County, IAIA11,6892.9%–

66Page County, IAIA14,8562.8%–

67Fayette County, IAIA19,0472.8%–

68Tama County, IAIA16,7962.8%–

69Boone County, IAIA26,7992.7%–

70Cerro Gordo County, IAIA42,3722.7%–

71Buena Vista County, IAIA20,4492.7%–

72Pottawattamie County, IAIA92,9962.7%–

73Black Hawk County, IAIA131,5322.6%–

74Sac County, IAIA9,5252.6%–

75Des Moines County, IAIA38,0772.6%–

76Adair County, IAIA7,4032.6%–

77Scott County, IAIA175,2592.6%–

78Calhoun County, IAIA9,5622.5%–

79Kossuth County, IAIA14,3222.5%–

80Winnebago County, IAIA10,2512.5%–

81Dubuque County, IAIA99,3812.5%–

82Webster County, IAIA36,8382.4%–

83Audubon County, IAIA5,5092.3%–

84Mitchell County, IAIA10,6502.3%–

85Howard County, IAIA9,4152.2%–

86Lee County, IAIA32,3062.2%–

87Jackson County, IAIA19,2882.2%–

88Montgomery County, IAIA10,0022.2%–

89Pocahontas County, IAIA6,8192.1%–

90Carroll County, IAIA20,3032.1%–

91Chickasaw County, IAIA11,6632.0%–

92Humboldt County, IAIA9,4092.0%–

93Jones County, IAIA21,2532.0%–

94Crawford County, IAIA16,2371.9%–

95Cass County, IAIA12,9601.9%–

96Worth County, IAIA7,3381.9%–

97Clayton County, IAIA16,8451.4%–

98Winneshiek County, IAIA19,7331.3%–

99Allamakee County, IAIA14,2381.3%–

SHOWING 1–99 OF 99

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