RANKING · 2020 CENSUS · 99 SHOWN OF 99

Largest German population, Iowa counties · 2020

Iowa counties ranked by the number of residents who are German ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 99 counties in Iowa that qualify, ranked against each other statewide. The median across all 99 is 5,368.

German Americans: full group profile →

IowaAll states All rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPGERMAN POPULATIONVS 2010

01Polk County, IAIA516,546120,555−6%

02Linn County, IAIA232,02871,183−17%

03Scott County, IAIA175,25956,040−7%

04Dubuque County, IAIA99,38145,123−14%

05Johnson County, IAIA160,04442,407−10%

06Black Hawk County, IAIA131,53240,782−24%

07Story County, IAIA101,29131,9430%

08Pottawattamie County, IAIA92,99629,725−20%

09Woodbury County, IAIA106,64929,568−17%

10Dallas County, IAIA118,45728,763+23%

11Clinton County, IAIA46,00217,895−23%

12Warren County, IAIA57,33115,553−8%

13Cerro Gordo County, IAIA42,37215,105−21%

14Bremer County, IAIA25,29612,426−14%

15Des Moines County, IAIA38,07712,127−20%

16Lee County, IAIA32,30611,414−19%

17Plymouth County, IAIA25,69711,315−16%

18Carroll County, IAIA20,30311,138−15%

19Muscatine County, IAIA41,85310,734−33%

20Marshall County, IAIA39,89010,537−23%

21Jasper County, IAIA38,15310,074−10%

22Webster County, IAIA36,8389,936−29%

23Benton County, IAIA26,0049,564−24%

24Boone County, IAIA26,7999,390−1%

25Sioux County, IAIA36,7749,246+12%

26Jackson County, IAIA19,2889,011−19%

27Marion County, IAIA34,1928,936−2%

28Jones County, IAIA21,2538,727−17%

29Buchanan County, IAIA20,8838,592−16%

30Winneshiek County, IAIA19,7338,533−17%

31Delaware County, IAIA17,6748,470−18%

32Fayette County, IAIA19,0478,194−22%

33Cedar County, IAIA18,3597,833−15%

34Wapello County, IAIA35,2107,583−9%

35Clayton County, IAIA16,8457,574−31%

36Dickinson County, IAIA18,0777,456−3%

37Butler County, IAIA14,0497,340−18%

38Hardin County, IAIA16,4556,959−22%

39Washington County, IAIA22,6676,845−24%

40Floyd County, IAIA14,9016,792−22%

41Iowa County, IAIA16,5046,737−24%

42Kossuth County, IAIA14,3226,693−18%

43Clay County, IAIA16,2026,407−16%

44Henry County, IAIA19,3496,370−15%

45Chickasaw County, IAIA11,6636,348−10%

46Crawford County, IAIA16,2376,002−31%

47Allamakee County, IAIA14,2385,912−16%

48Grundy County, IAIA12,3615,678−20%

49Hamilton County, IAIA14,9445,400−5%

50Mahaska County, IAIA21,8805,368−7%

51O'Brien County, IAIA14,2205,278−22%

52Poweshiek County, IAIA18,3685,264−30%

53Shelby County, IAIA11,6895,181−16%

54Tama County, IAIA16,7965,156−28%

55Buena Vista County, IAIA20,4495,129−25%

56Mills County, IAIA14,7935,046−6%

57Harrison County, IAIA14,6234,943−26%

58Madison County, IAIA17,2704,868−3%

59Cherokee County, IAIA11,3694,753−18%

60Mitchell County, IAIA10,6504,690−18%

61Lyon County, IAIA12,3544,662−15%

62Cass County, IAIA12,9604,583−23%

63Wright County, IAIA12,8014,531−8%

64Sac County, IAIA9,5254,483−26%

65Franklin County, IAIA9,8684,420−13%

66Page County, IAIA14,8564,008−19%

67Hancock County, IAIA10,5283,958−28%

68Calhoun County, IAIA9,5623,902−23%

69Winnebago County, IAIA10,2513,866−10%

70Guthrie County, IAIA10,7823,738−19%

71Palo Alto County, IAIA8,8993,605−12%

72Jefferson County, IAIA15,2913,511−28%

73Howard County, IAIA9,4153,496−24%

74Ida County, IAIA6,7773,467−18%

75Keokuk County, IAIA9,7973,392−22%

76Humboldt County, IAIA9,4093,231−25%

77Monona County, IAIA8,5393,008−25%

78Emmet County, IAIA9,1072,920−29%

79Union County, IAIA11,8292,832−20%

80Pocahontas County, IAIA6,8192,802−17%

81Appanoose County, IAIA12,0772,708−16%

82Greene County, IAIA8,6582,705−34%

83Montgomery County, IAIA10,0022,541−26%

84Louisa County, IAIA10,4162,534−44%

85Osceola County, IAIA5,9802,502−21%

86Adair County, IAIA7,4032,392−28%

87Lucas County, IAIA8,8472,392−21%

88Worth County, IAIA7,3382,296−31%

89Van Buren County, IAIA7,1312,093−15%

90Fremont County, IAIA6,5222,063−17%

91Davis County, IAIA9,2302,057−21%

92Clarke County, IAIA9,5742,003−26%

93Monroe County, IAIA7,4061,9870%

94Audubon County, IAIA5,5091,986−27%

95Decatur County, IAIA7,6551,700−8%

96Wayne County, IAIA6,7381,493−7%

97Taylor County, IAIA5,8351,474−14%

98Adams County, IAIA3,6171,106−20%

99Ringgold County, IAIA4,6421,096−32%

SHOWING 1–99 OF 99

Download CSV (full list, 99 rows)

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