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 2023 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.

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 POPULATIONVS 2000

01Polk County, IAIA516,546120,555–

02Linn County, IAIA232,02871,183–

03Scott County, IAIA175,25956,040–

04Dubuque County, IAIA99,38145,123–

05Johnson County, IAIA160,04442,407–

06Black Hawk County, IAIA131,53240,782–

07Story County, IAIA101,29131,943–

08Pottawattamie County, IAIA92,99629,725–

09Woodbury County, IAIA106,64929,568–

10Dallas County, IAIA118,45728,763–

11Clinton County, IAIA46,00217,895–

12Warren County, IAIA57,33115,553–

13Cerro Gordo County, IAIA42,37215,105–

14Bremer County, IAIA25,29612,426–

15Des Moines County, IAIA38,07712,127–

16Lee County, IAIA32,30611,414–

17Plymouth County, IAIA25,69711,315–

18Carroll County, IAIA20,30311,138–

19Muscatine County, IAIA41,85310,734–

20Marshall County, IAIA39,89010,537–

21Jasper County, IAIA38,15310,074–

22Webster County, IAIA36,8389,936–

23Benton County, IAIA26,0049,564–

24Boone County, IAIA26,7999,390–

25Sioux County, IAIA36,7749,246–

26Jackson County, IAIA19,2889,011–

27Marion County, IAIA34,1928,936–

28Jones County, IAIA21,2538,727–

29Buchanan County, IAIA20,8838,592–

30Winneshiek County, IAIA19,7338,533–

31Delaware County, IAIA17,6748,470–

32Fayette County, IAIA19,0478,194–

33Cedar County, IAIA18,3597,833–

34Wapello County, IAIA35,2107,583–

35Clayton County, IAIA16,8457,574–

36Dickinson County, IAIA18,0777,456–

37Butler County, IAIA14,0497,340–

38Hardin County, IAIA16,4556,959–

39Washington County, IAIA22,6676,845–

40Floyd County, IAIA14,9016,792–

41Iowa County, IAIA16,5046,737–

42Kossuth County, IAIA14,3226,693–

43Clay County, IAIA16,2026,407–

44Henry County, IAIA19,3496,370–

45Chickasaw County, IAIA11,6636,348–

46Crawford County, IAIA16,2376,002–

47Allamakee County, IAIA14,2385,912–

48Grundy County, IAIA12,3615,678–

49Hamilton County, IAIA14,9445,400–

50Mahaska County, IAIA21,8805,368–

51O'Brien County, IAIA14,2205,278–

52Poweshiek County, IAIA18,3685,264–

53Shelby County, IAIA11,6895,181–

54Tama County, IAIA16,7965,156–

55Buena Vista County, IAIA20,4495,129–

56Mills County, IAIA14,7935,046–

57Harrison County, IAIA14,6234,943–

58Madison County, IAIA17,2704,868–

59Cherokee County, IAIA11,3694,753–

60Mitchell County, IAIA10,6504,690–

61Lyon County, IAIA12,3544,662–

62Cass County, IAIA12,9604,583–

63Wright County, IAIA12,8014,531–

64Sac County, IAIA9,5254,483–

65Franklin County, IAIA9,8684,420–

66Page County, IAIA14,8564,008–

67Hancock County, IAIA10,5283,958–

68Calhoun County, IAIA9,5623,902–

69Winnebago County, IAIA10,2513,866–

70Guthrie County, IAIA10,7823,738–

71Palo Alto County, IAIA8,8993,605–

72Jefferson County, IAIA15,2913,511–

73Howard County, IAIA9,4153,496–

74Ida County, IAIA6,7773,467–

75Keokuk County, IAIA9,7973,392–

76Humboldt County, IAIA9,4093,231–

77Monona County, IAIA8,5393,008–

78Emmet County, IAIA9,1072,920–

79Union County, IAIA11,8292,832–

80Pocahontas County, IAIA6,8192,802–

81Appanoose County, IAIA12,0772,708–

82Greene County, IAIA8,6582,705–

83Montgomery County, IAIA10,0022,541–

84Louisa County, IAIA10,4162,534–

85Osceola County, IAIA5,9802,502–

86Adair County, IAIA7,4032,392–

87Lucas County, IAIA8,8472,392–

88Worth County, IAIA7,3382,296–

89Van Buren County, IAIA7,1312,093–

90Fremont County, IAIA6,5222,063–

91Davis County, IAIA9,2302,057–

92Clarke County, IAIA9,5742,003–

93Monroe County, IAIA7,4061,987–

94Audubon County, IAIA5,5091,986–

95Decatur County, IAIA7,6551,700–

96Wayne County, IAIA6,7381,493–

97Taylor County, IAIA5,8351,474–

98Adams County, IAIA3,6171,106–

99Ringgold County, IAIA4,6421,096–

SHOWING 1–99 OF 99

Download CSV (full list, 99 rows)

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