RANKING · 2020 CENSUS · 99 SHOWN OF 99

Largest Dutch population, Iowa counties · 2020

Iowa counties ranked by the number of residents who are Dutch 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 422.

Dutch Americans: full group profile →

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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

RANKPLACESTATEPOPDUTCH POPULATIONVS 2010

01Sioux County, IAIA36,77415,707−8%

02Polk County, IAIA516,54615,191−21%

03Marion County, IAIA34,1926,271−33%

04Jasper County, IAIA38,1534,8720%

05Linn County, IAIA232,0284,204−44%

06Lyon County, IAIA12,3544,059+10%

07Woodbury County, IAIA106,6493,861−11%

08Mahaska County, IAIA21,8803,526−32%

09O'Brien County, IAIA14,2203,294+1%

10Johnson County, IAIA160,0443,257−13%

11Scott County, IAIA175,2593,076−26%

12Story County, IAIA101,2913,056+5%

13Black Hawk County, IAIA131,5322,701−21%

14Dallas County, IAIA118,4572,520−16%

15Warren County, IAIA57,3311,976−24%

16Clinton County, IAIA46,0021,685−35%

17Pottawattamie County, IAIA92,9961,652−33%

18Plymouth County, IAIA25,6971,529−16%

19Dubuque County, IAIA99,3811,467−35%

20Poweshiek County, IAIA18,3681,454+17%

21Wapello County, IAIA35,2101,304−33%

22Cerro Gordo County, IAIA42,3721,129−6%

23Des Moines County, IAIA38,0771,086+5%

24Dickinson County, IAIA18,0771,085−1%

25Boone County, IAIA26,7991,068+48%

26Osceola County, IAIA5,980952−36%

27Marshall County, IAIA39,890923−36%

28Muscatine County, IAIA41,853877−34%

29Davis County, IAIA9,230686−13%

30Webster County, IAIA36,838648−29%

31Washington County, IAIA22,667643−10%

32Iowa County, IAIA16,504561−7%

33Henry County, IAIA19,349554−22%

34Grundy County, IAIA12,361538−29%

35Benton County, IAIA26,004530−40%

36Monroe County, IAIA7,406524−32%

37Jefferson County, IAIA15,291522−34%

38Butler County, IAIA14,049520−33%

39Cherokee County, IAIA11,369512+27%

40Bremer County, IAIA25,296503−37%

41Clarke County, IAIA9,574486+25%

42Clay County, IAIA16,202469−53%

43Mills County, IAIA14,793451−11%

44Jones County, IAIA21,253450+8%

45Lee County, IAIA32,306449−44%

46Buchanan County, IAIA20,883434−49%

47Buena Vista County, IAIA20,449431−20%

48Union County, IAIA11,829428−33%

49Keokuk County, IAIA9,797428−40%

50Madison County, IAIA17,270422−37%

51Winnebago County, IAIA10,251421+56%

52Floyd County, IAIA14,901419−15%

53Hancock County, IAIA10,528408−30%

54Hamilton County, IAIA14,944399−46%

55Hardin County, IAIA16,455385−29%

56Sac County, IAIA9,525373+35%

57Cedar County, IAIA18,359358−42%

58Fayette County, IAIA19,047338−42%

59Greene County, IAIA8,658337−42%

60Cass County, IAIA12,960336+27%

61Appanoose County, IAIA12,077335−52%

62Lucas County, IAIA8,847313−32%

63Harrison County, IAIA14,623294−36%

64Kossuth County, IAIA14,322292−26%

65Crawford County, IAIA16,237290−10%

66Guthrie County, IAIA10,782281−20%

67Page County, IAIA14,856276−39%

68Emmet County, IAIA9,107274−11%

69Tama County, IAIA16,796271−45%

70Wayne County, IAIA6,738271−20%

71Jackson County, IAIA19,288263−41%

72Mitchell County, IAIA10,650259+6%

73Delaware County, IAIA17,674259−51%

74Carroll County, IAIA20,303258−40%

75Wright County, IAIA12,801256−36%

76Franklin County, IAIA9,868242−30%

77Monona County, IAIA8,539239−44%

78Winneshiek County, IAIA19,733235−11%

79Montgomery County, IAIA10,002218−7%

80Palo Alto County, IAIA8,899214−37%

81Chickasaw County, IAIA11,663210−18%

82Van Buren County, IAIA7,131210−33%

83Ida County, IAIA6,777203−23%

84Calhoun County, IAIA9,562202−19%

85Howard County, IAIA9,415197−9%

86Louisa County, IAIA10,416189−49%

87Decatur County, IAIA7,655177−62%

88Clayton County, IAIA16,845155−37%

89Fremont County, IAIA6,522141−38%

90Taylor County, IAIA5,835137−40%

91Adair County, IAIA7,403136−32%

92Pocahontas County, IAIA6,819132−18%

93Worth County, IAIA7,338130−9%

94Allamakee County, IAIA14,238125−31%

95Ringgold County, IAIA4,642123−43%

96Humboldt County, IAIA9,409119−41%

97Shelby County, IAIA11,689116−67%

98Adams County, IAIA3,617106−15%

99Audubon County, IAIA5,50978−46%

SHOWING 1–99 OF 99

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