RANKING · 2024 ACS · 99 SHOWN OF 99

Highest German population share, Iowa counties

Iowa counties ranked by the share of all residents who are German ancestry (2023 American Community Survey). A concentration measure: German residents as a percentage of total population. This list covers the 99 counties in Iowa that qualify, ranked against each other statewide.

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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

RANKPLACESTATEPOPGERMAN SHAREVS 2000

01Carroll County, IAIA20,30351.6%–

02Chickasaw County, IAIA11,66349.6%–

03Butler County, IAIA14,04947.6%–

04Bremer County, IAIA25,29646.8%–

05Clayton County, IAIA16,84546.6%–

06Delaware County, IAIA17,67446.5%–

07Kossuth County, IAIA14,32246.4%–

08Ida County, IAIA6,77744.9%–

09Dubuque County, IAIA99,38144.7%–

10Grundy County, IAIA12,36144.2%–

11Cherokee County, IAIA11,36943.1%–

12Clay County, IAIA16,20242.9%–

13Floyd County, IAIA14,90142.3%–

14Mitchell County, IAIA10,65041.5%–

15Sac County, IAIA9,52541.4%–

16Cedar County, IAIA18,35941.2%–

17Dickinson County, IAIA18,07741.0%–

18Fayette County, IAIA19,04740.9%–

19Franklin County, IAIA9,86840.7%–

20Jackson County, IAIA19,28840.4%–

21Palo Alto County, IAIA8,89940.1%–

22Winnebago County, IAIA10,25140.0%–

23Buchanan County, IAIA20,88339.8%–

24Hardin County, IAIA16,45539.8%–

25O'Brien County, IAIA14,22039.7%–

26Plymouth County, IAIA25,69739.0%–

27Hancock County, IAIA10,52838.6%–

28Howard County, IAIA9,41538.6%–

29Winneshiek County, IAIA19,73338.0%–

30Iowa County, IAIA16,50437.5%–

31Jones County, IAIA21,25337.4%–

32Benton County, IAIA26,00437.3%–

33Shelby County, IAIA11,68937.2%–

34Adair County, IAIA7,40336.7%–

35Allamakee County, IAIA14,23836.0%–

36Calhoun County, IAIA9,56236.0%–

37Pocahontas County, IAIA6,81936.0%–

38Clinton County, IAIA46,00235.7%–

39Lyon County, IAIA12,35435.0%–

40Boone County, IAIA26,79934.6%–

41Cerro Gordo County, IAIA42,37234.6%–

42Crawford County, IAIA16,23734.4%–

43Harrison County, IAIA14,62333.9%–

44Osceola County, IAIA5,98033.6%–

45Worth County, IAIA7,33833.6%–

46Monona County, IAIA8,53933.5%–

47Van Buren County, IAIA7,13133.2%–

48Lee County, IAIA32,30633.0%–

49Humboldt County, IAIA9,40932.8%–

50Audubon County, IAIA5,50932.7%–

51Fremont County, IAIA6,52231.1%–

52Greene County, IAIA8,65831.0%–

53Scott County, IAIA175,25930.7%–

54Keokuk County, IAIA9,79730.6%–

55Poweshiek County, IAIA18,36830.6%–

56Mills County, IAIA14,79330.6%–

57Henry County, IAIA19,34930.5%–

58Linn County, IAIA232,02830.3%–

59Madison County, IAIA17,27030.2%–

60Black Hawk County, IAIA131,53230.2%–

61Emmet County, IAIA9,10730.2%–

62Guthrie County, IAIA10,78229.9%–

63Warren County, IAIA57,33129.9%–

64Hamilton County, IAIA14,94429.8%–

65Dallas County, IAIA118,45729.6%–

66Wright County, IAIA12,80129.3%–

67Des Moines County, IAIA38,07729.2%–

68Tama County, IAIA16,79629.1%–

69Washington County, IAIA22,66729.0%–

70Cass County, IAIA12,96028.9%–

71Story County, IAIA101,29128.6%–

72Pottawattamie County, IAIA92,99628.1%–

73Johnson County, IAIA160,04428.0%–

74Adams County, IAIA3,61727.8%–

75Webster County, IAIA36,83827.2%–

76Davis County, IAIA9,23027.0%–

77Woodbury County, IAIA106,64926.0%–

78Jasper County, IAIA38,15325.9%–

79Lucas County, IAIA8,84725.5%–

80Union County, IAIA11,82925.2%–

81Polk County, IAIA516,54624.5%–

82Muscatine County, IAIA41,85324.4%–

83Marion County, IAIA34,19224.0%–

84Buena Vista County, IAIA20,44923.7%–

85Ringgold County, IAIA4,64223.4%–

86Marshall County, IAIA39,89023.2%–

87Montgomery County, IAIA10,00221.9%–

88Clarke County, IAIA9,57421.8%–

89Page County, IAIA14,85621.6%–

90Sioux County, IAIA36,77421.5%–

91Louisa County, IAIA10,41621.3%–

92Appanoose County, IAIA12,07721.2%–

93Mahaska County, IAIA21,88020.5%–

94Monroe County, IAIA7,40620.1%–

95Decatur County, IAIA7,65519.6%–

96Taylor County, IAIA5,83518.5%–

97Wayne County, IAIA6,73818.0%–

98Wapello County, IAIA35,21017.6%–

99Jefferson County, IAIA15,29116.4%–

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