RANKING · 2010 CENSUS · 99 SHOWN OF 99

Highest German population share, Iowa counties · 2010

Iowa counties ranked by the share of all residents who are German ancestry (2010 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. The median across all 99 is 41.7%.

German Americans: full group profile →

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

RANKPLACESTATEPOPGERMAN SHAREVS –

01Carroll County, IAIA20,30362.8%–

02Clayton County, IAIA16,84560.7%–

03Bremer County, IAIA25,29660.0%–

04Butler County, IAIA14,04959.8%–

05Ida County, IAIA6,77759.3%–

06Sac County, IAIA9,52558.0%–

07Delaware County, IAIA17,67457.8%–

08Grundy County, IAIA12,36157.3%–

09Dubuque County, IAIA99,38156.7%–

10Chickasaw County, IAIA11,66356.3%–

11Jackson County, IAIA19,28856.0%–

12Iowa County, IAIA16,50454.3%–

13Plymouth County, IAIA25,69753.9%–

14Mitchell County, IAIA10,65053.2%–

15Floyd County, IAIA14,90152.8%–

16Kossuth County, IAIA14,32252.0%–

17Calhoun County, IAIA9,56251.7%–

18Crawford County, IAIA16,23751.3%–

19Hardin County, IAIA16,45550.8%–

20Jones County, IAIA21,25350.5%–

21Fayette County, IAIA19,04750.1%–

22Cedar County, IAIA18,35950.1%–

23Shelby County, IAIA11,68950.0%–

24Winneshiek County, IAIA19,73349.1%–

25Buchanan County, IAIA20,88348.9%–

26Allamakee County, IAIA14,23848.9%–

27Benton County, IAIA26,00448.1%–

28Howard County, IAIA9,41548.1%–

29Osceola County, IAIA5,98048.1%–

30Hancock County, IAIA10,52848.0%–

31Cherokee County, IAIA11,36947.7%–

32Clinton County, IAIA46,00247.4%–

33Franklin County, IAIA9,86847.4%–

34Lyon County, IAIA12,35447.2%–

35O'Brien County, IAIA14,22047.0%–

36Dickinson County, IAIA18,07746.1%–

37Clay County, IAIA16,20245.5%–

38Pocahontas County, IAIA6,81945.2%–

39Harrison County, IAIA14,62344.1%–

40Audubon County, IAIA5,50944.1%–

41Worth County, IAIA7,33843.9%–

42Humboldt County, IAIA9,40943.6%–

43Greene County, IAIA8,65843.4%–

44Cerro Gordo County, IAIA42,37243.3%–

45Palo Alto County, IAIA8,89943.1%–

46Adair County, IAIA7,40342.9%–

47Monona County, IAIA8,53942.9%–

48Cass County, IAIA12,96042.6%–

49Guthrie County, IAIA10,78241.8%–

50Washington County, IAIA22,66741.7%–

51Black Hawk County, IAIA131,53241.7%–

52Linn County, IAIA232,02841.1%–

53Keokuk County, IAIA9,79740.8%–

54Pottawattamie County, IAIA92,99640.3%–

55Tama County, IAIA16,79639.7%–

56Poweshiek County, IAIA18,36839.6%–

57Emmet County, IAIA9,10739.5%–

58Winnebago County, IAIA10,25139.1%–

59Lee County, IAIA32,30639.1%–

60Louisa County, IAIA10,41638.7%–

61Dallas County, IAIA118,45738.0%–

62Muscatine County, IAIA41,85337.7%–

63Des Moines County, IAIA38,07737.5%–

64Warren County, IAIA57,33137.3%–

65Johnson County, IAIA160,04437.1%–

66Scott County, IAIA175,25937.0%–

67Henry County, IAIA19,34937.0%–

68Wright County, IAIA12,80136.9%–

69Webster County, IAIA36,83836.7%–

70Story County, IAIA101,29136.6%–

71Boone County, IAIA26,79936.1%–

72Hamilton County, IAIA14,94435.9%–

73Mills County, IAIA14,79335.3%–

74Woodbury County, IAIA106,64935.2%–

75Buena Vista County, IAIA20,44934.2%–

76Marshall County, IAIA39,89034.0%–

77Adams County, IAIA3,61733.6%–

78Lucas County, IAIA8,84733.3%–

79Fremont County, IAIA6,52233.0%–

80Madison County, IAIA17,27032.4%–

81Van Buren County, IAIA7,13132.3%–

82Montgomery County, IAIA10,00231.5%–

83Ringgold County, IAIA4,64231.1%–

84Page County, IAIA14,85630.8%–

85Polk County, IAIA516,54630.6%–

86Jasper County, IAIA38,15330.4%–

87Davis County, IAIA9,23029.9%–

88Clarke County, IAIA9,57429.4%–

89Jefferson County, IAIA15,29129.3%–

90Union County, IAIA11,82928.6%–

91Marion County, IAIA34,19227.3%–

92Taylor County, IAIA5,83526.9%–

93Mahaska County, IAIA21,88025.9%–

94Monroe County, IAIA7,40625.2%–

95Wayne County, IAIA6,73825.1%–

96Appanoose County, IAIA12,07724.8%–

97Sioux County, IAIA36,77424.7%–

98Wapello County, IAIA35,21023.4%–

99Decatur County, IAIA7,65521.8%–

SHOWING 1–99 OF 99

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