RANKING · 2020 CENSUS · 99 SHOWN OF 99

Highest German population share, Iowa counties · 2020

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.

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 2000

01Carroll County, IAIA20,30355.3%–

02Chickasaw County, IAIA11,66353.0%–

03Butler County, IAIA14,04950.6%–

04Ida County, IAIA6,77750.5%–

05Bremer County, IAIA25,29649.6%–

06Delaware County, IAIA17,67449.5%–

07Jackson County, IAIA19,28846.6%–

08Dubuque County, IAIA99,38146.4%–

09Grundy County, IAIA12,36146.3%–

10Sac County, IAIA9,52546.2%–

11Kossuth County, IAIA14,32245.0%–

12Plymouth County, IAIA25,69745.0%–

13Shelby County, IAIA11,68944.9%–

14Mitchell County, IAIA10,65044.3%–

15Franklin County, IAIA9,86843.8%–

16Floyd County, IAIA14,90143.2%–

17Clayton County, IAIA16,84543.2%–

18Dickinson County, IAIA18,07743.2%–

19Allamakee County, IAIA14,23843.0%–

20Winneshiek County, IAIA19,73342.5%–

21Jones County, IAIA21,25342.4%–

22Cedar County, IAIA18,35942.4%–

23Cherokee County, IAIA11,36942.1%–

24Fayette County, IAIA19,04741.8%–

25Iowa County, IAIA16,50441.7%–

26Pocahontas County, IAIA6,81941.7%–

27Osceola County, IAIA5,98041.6%–

28Hardin County, IAIA16,45541.1%–

29Buchanan County, IAIA20,88340.6%–

30Calhoun County, IAIA9,56240.4%–

31Palo Alto County, IAIA8,89940.3%–

32Clay County, IAIA16,20239.7%–

33Lyon County, IAIA12,35439.5%–

34Clinton County, IAIA46,00238.3%–

35O'Brien County, IAIA14,22038.3%–

36Howard County, IAIA9,41538.0%–

37Benton County, IAIA26,00437.4%–

38Hancock County, IAIA10,52837.0%–

39Winnebago County, IAIA10,25136.9%–

40Hamilton County, IAIA14,94436.2%–

41Audubon County, IAIA5,50935.9%–

42Wright County, IAIA12,80135.8%–

43Boone County, IAIA26,79935.6%–

44Cerro Gordo County, IAIA42,37235.4%–

45Crawford County, IAIA16,23735.3%–

46Cass County, IAIA12,96035.3%–

47Harrison County, IAIA14,62335.2%–

48Guthrie County, IAIA10,78234.9%–

49Monona County, IAIA8,53934.7%–

50Humboldt County, IAIA9,40933.9%–

51Adair County, IAIA7,40333.9%–

52Lee County, IAIA32,30633.6%–

53Mills County, IAIA14,79333.6%–

54Keokuk County, IAIA9,79733.4%–

55Story County, IAIA101,29132.8%–

56Scott County, IAIA175,25932.4%–

57Henry County, IAIA19,34932.0%–

58Dallas County, IAIA118,45731.8%–

59Pottawattamie County, IAIA92,99631.8%–

60Linn County, IAIA232,02831.6%–

61Emmet County, IAIA9,10731.3%–

62Washington County, IAIA22,66731.0%–

63Black Hawk County, IAIA131,53230.9%–

64Worth County, IAIA7,33830.9%–

65Des Moines County, IAIA38,07730.9%–

66Warren County, IAIA57,33130.6%–

67Adams County, IAIA3,61730.4%–

68Tama County, IAIA16,79630.4%–

69Greene County, IAIA8,65830.3%–

70Madison County, IAIA17,27030.1%–

71Fremont County, IAIA6,52229.9%–

72Van Buren County, IAIA7,13129.5%–

73Woodbury County, IAIA106,64928.8%–

74Poweshiek County, IAIA18,36828.6%–

75Johnson County, IAIA160,04428.1%–

76Lucas County, IAIA8,84728.0%–

77Webster County, IAIA36,83827.3%–

78Jasper County, IAIA38,15327.2%–

79Marion County, IAIA34,19226.9%–

80Sioux County, IAIA36,77426.5%–

81Marshall County, IAIA39,89026.5%–

82Page County, IAIA14,85626.4%–

83Buena Vista County, IAIA20,44925.7%–

84Monroe County, IAIA7,40625.6%–

85Montgomery County, IAIA10,00225.4%–

86Muscatine County, IAIA41,85325.1%–

87Polk County, IAIA516,54624.8%–

88Mahaska County, IAIA21,88024.0%–

89Taylor County, IAIA5,83523.9%–

90Wayne County, IAIA6,73823.2%–

91Union County, IAIA11,82923.0%–

92Davis County, IAIA9,23022.9%–

93Louisa County, IAIA10,41622.8%–

94Ringgold County, IAIA4,64222.3%–

95Appanoose County, IAIA12,07721.7%–

96Wapello County, IAIA35,21021.6%–

97Decatur County, IAIA7,65521.5%–

98Clarke County, IAIA9,57421.3%–

99Jefferson County, IAIA15,29119.3%–

SHOWING 1–99 OF 99

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