RANKING · 2024 ACS · 99 SHOWN OF 99

Largest American population, Iowa counties

Iowa counties ranked by the number of residents who are American ancestry, from the 2024 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.

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SAME RANKING BYCities States Metros

RELATEDHighest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share Largest Iraqi population

YEAR2010 2020 2024

RANKPLACESTATEPOPAMERICAN POPULATIONVS 2010

01Polk County, IAIA516,54616,737−12%

02Woodbury County, IAIA106,6499,234+123%

03Linn County, IAIA232,0288,698−4%

04Black Hawk County, IAIA131,5326,219−32%

05Scott County, IAIA175,2595,736−39%

06Pottawattamie County, IAIA92,9965,708+33%

07Dubuque County, IAIA99,3815,087−2%

08Johnson County, IAIA160,0444,491−2%

09Dallas County, IAIA118,4573,743+2%

10Story County, IAIA101,2912,888+7%

11Muscatine County, IAIA41,8532,782+6%

12Warren County, IAIA57,3312,646−13%

13Jasper County, IAIA38,1532,590+3%

14Des Moines County, IAIA38,0772,551−32%

15Wapello County, IAIA35,2102,249−38%

16Sioux County, IAIA36,7742,210+95%

17Cerro Gordo County, IAIA42,3722,021+19%

18Clinton County, IAIA46,0021,950−39%

19Plymouth County, IAIA25,6971,735+16%

20Marshall County, IAIA39,8901,661−16%

21Fayette County, IAIA19,0471,640+8%

22Marion County, IAIA34,1921,602−36%

23Bremer County, IAIA25,2961,584+10%

24Lee County, IAIA32,3061,529−55%

25Webster County, IAIA36,8381,439+17%

26Mahaska County, IAIA21,8801,364−27%

27Washington County, IAIA22,6671,331−15%

28Benton County, IAIA26,0041,236+13%

29Boone County, IAIA26,7991,190−20%

30Henry County, IAIA19,3491,176−37%

31Buchanan County, IAIA20,8831,160−22%

32Jones County, IAIA21,2531,087−8%

33Clayton County, IAIA16,8451,069+16%

34Carroll County, IAIA20,3031,047−4%

35Jackson County, IAIA19,2881,045−22%

36Monona County, IAIA8,5391,006+114%

37Grundy County, IAIA12,361994+13%

38Poweshiek County, IAIA18,368979−0%

39Harrison County, IAIA14,623975+16%

40Clay County, IAIA16,202967+20%

41Davis County, IAIA9,230934−21%

42Hardin County, IAIA16,455927+23%

43Jefferson County, IAIA15,291918−10%

44Cedar County, IAIA18,359917−20%

45Iowa County, IAIA16,504900+20%

46Appanoose County, IAIA12,077881−11%

47Chickasaw County, IAIA11,663854−22%

48Winneshiek County, IAIA19,733830+17%

49Delaware County, IAIA17,674826−28%

50O'Brien County, IAIA14,220814−20%

51Madison County, IAIA17,270787−33%

52Cass County, IAIA12,960755+3%

53Floyd County, IAIA14,901755−30%

54Butler County, IAIA14,049738−28%

55Dickinson County, IAIA18,077736+78%

56Page County, IAIA14,856727−62%

57Hancock County, IAIA10,528716+45%

58Union County, IAIA11,829699−52%

59Keokuk County, IAIA9,797697−30%

60Mills County, IAIA14,793690−36%

61Van Buren County, IAIA7,131678−19%

62Allamakee County, IAIA14,238664−19%

63Lyon County, IAIA12,354644+13%

64Wright County, IAIA12,801643−14%

65Mitchell County, IAIA10,650638−17%

66Winnebago County, IAIA10,251542+75%

67Tama County, IAIA16,796526−57%

68Lucas County, IAIA8,847509−34%

69Crawford County, IAIA16,237508−12%

70Louisa County, IAIA10,416499−49%

71Montgomery County, IAIA10,002498−55%

72Hamilton County, IAIA14,944488−36%

73Fremont County, IAIA6,522471−60%

74Buena Vista County, IAIA20,449464−34%

75Franklin County, IAIA9,868458−23%

76Guthrie County, IAIA10,782456−56%

77Calhoun County, IAIA9,562450−12%

78Clarke County, IAIA9,574446−23%

79Kossuth County, IAIA14,322440−39%

80Taylor County, IAIA5,835432−42%

81Emmet County, IAIA9,107428+32%

82Palo Alto County, IAIA8,899428−28%

83Cherokee County, IAIA11,369424−32%

84Wayne County, IAIA6,738416−34%

85Sac County, IAIA9,525410−33%

86Osceola County, IAIA5,980409+45%

87Shelby County, IAIA11,689397−37%

88Ida County, IAIA6,777372+10%

89Humboldt County, IAIA9,409371−37%

90Monroe County, IAIA7,406365−47%

91Decatur County, IAIA7,655364−54%

92Ringgold County, IAIA4,642364−38%

93Pocahontas County, IAIA6,819361−26%

94Adair County, IAIA7,403307−38%

95Howard County, IAIA9,415299−9%

96Greene County, IAIA8,658275−48%

97Worth County, IAIA7,338267+4%

98Adams County, IAIA3,617264+29%

99Audubon County, IAIA5,509248−28%

SHOWING 1–99 OF 99

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES