RANKING · 2024 ACS · 99 SHOWN OF 99

Most foreign-born residents, Iowa counties

Iowa counties ranked by the share of residents born outside the US (2024 ACS). This list covers the 99 counties in Iowa that qualify, ranked against each other statewide.

IowaAll states All rankings

SAME RANKING BYCities States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

YEAR2010 2020 2024

RANKPLACESTATEPOPFOREIGN-BORNVS 2010

01Buena Vista County, IAIA20,44921.3%+39%

02Crawford County, IAIA16,23717.5%+43%

03Marshall County, IAIA39,89014.6%+51%

04Jefferson County, IAIA15,29114.1%+14%

05Woodbury County, IAIA106,64910.6%+33%

06Dallas County, IAIA118,45710.4%+62%

07Polk County, IAIA516,54610.1%+29%

08Wapello County, IAIA35,2109.9%+79%

09Johnson County, IAIA160,0449.8%+19%

10Louisa County, IAIA10,4169.4%+27%

11Story County, IAIA101,2918.6%+7%

12Sioux County, IAIA36,7748.5%+44%

13Franklin County, IAIA9,8688.5%+59%

14Allamakee County, IAIA14,2387.2%+47%

15Muscatine County, IAIA41,8536.8%−9%

16Clarke County, IAIA9,5746.6%+27%

17Wright County, IAIA12,8016.5%+53%

18Black Hawk County, IAIA131,5326.5%+46%

19Hamilton County, IAIA14,9446.4%+184%

20Osceola County, IAIA5,9805.8%+108%

21Linn County, IAIA232,0285.6%+93%

22Scott County, IAIA175,2594.8%+37%

23O'Brien County, IAIA14,2204.4%+103%

24Humboldt County, IAIA9,4094.4%+179%

25Lucas County, IAIA8,8474.1%+31%

26Tama County, IAIA16,7964.1%+22%

27Pottawattamie County, IAIA92,9964.0%+19%

28Plymouth County, IAIA25,6973.7%+189%

29Hardin County, IAIA16,4553.6%+98%

30Poweshiek County, IAIA18,3683.6%+58%

31Cherokee County, IAIA11,3693.6%+207%

32Winnebago County, IAIA10,2513.5%+14%

33Kossuth County, IAIA14,3223.4%+425%

34Emmet County, IAIA9,1073.4%−8%

35Dubuque County, IAIA99,3813.3%+94%

36Washington County, IAIA22,6673.2%+17%

37Taylor County, IAIA5,8353.2%+34%

38Pocahontas County, IAIA6,8193.2%+157%

39Webster County, IAIA36,8383.0%+42%

40Chickasaw County, IAIA11,6633.0%+85%

41Jasper County, IAIA38,1532.8%+168%

42Winneshiek County, IAIA19,7332.6%+32%

43Cerro Gordo County, IAIA42,3722.6%+15%

44Ida County, IAIA6,7772.6%+283%

45Clay County, IAIA16,2022.5%+23%

46Palo Alto County, IAIA8,8992.5%+290%

47Floyd County, IAIA14,9012.4%+34%

48Sac County, IAIA9,5252.4%+26%

49Des Moines County, IAIA38,0772.3%+19%

50Howard County, IAIA9,4152.3%+142%

51Butler County, IAIA14,0492.3%+152%

52Clayton County, IAIA16,8452.3%+34%

53Mahaska County, IAIA21,8802.2%+56%

54Hancock County, IAIA10,5282.1%+48%

55Fayette County, IAIA19,0472.1%+82%

56Marion County, IAIA34,1922.1%+28%

57Henry County, IAIA19,3492.0%−57%

58Clinton County, IAIA46,0022.0%+68%

59Lyon County, IAIA12,3542.0%+184%

60Lee County, IAIA32,3061.9%+33%

61Decatur County, IAIA7,6551.9%−29%

62Guthrie County, IAIA10,7821.9%+73%

63Page County, IAIA14,8561.9%−7%

64Union County, IAIA11,8291.8%+250%

65Mitchell County, IAIA10,6501.8%+74%

66Madison County, IAIA17,2701.8%+175%

67Grundy County, IAIA12,3611.7%+297%

68Audubon County, IAIA5,5091.7%+157%

69Adair County, IAIA7,4031.6%+226%

70Shelby County, IAIA11,6891.6%+229%

71Fremont County, IAIA6,5221.6%+48%

72Jones County, IAIA21,2531.6%+86%

73Bremer County, IAIA25,2961.6%+21%

74Montgomery County, IAIA10,0021.6%−20%

75Carroll County, IAIA20,3031.6%+149%

76Warren County, IAIA57,3311.5%+33%

77Boone County, IAIA26,7991.5%+80%

78Greene County, IAIA8,6581.5%+5%

79Davis County, IAIA9,2301.4%+139%

80Appanoose County, IAIA12,0771.3%+101%

81Buchanan County, IAIA20,8831.3%+58%

82Dickinson County, IAIA18,0771.2%+12%

83Mills County, IAIA14,7931.2%−30%

84Keokuk County, IAIA9,7971.0%+24%

85Iowa County, IAIA16,5041.0%+66%

86Calhoun County, IAIA9,5621.0%+42%

87Wayne County, IAIA6,7380.9%−67%

88Cass County, IAIA12,9600.9%−24%

89Cedar County, IAIA18,3590.9%−28%

90Worth County, IAIA7,3380.9%+25%

91Benton County, IAIA26,0040.8%−13%

92Harrison County, IAIA14,6230.8%−12%

93Jackson County, IAIA19,2880.8%+29%

94Monroe County, IAIA7,4060.7%−51%

95Ringgold County, IAIA4,6420.7%−58%

96Monona County, IAIA8,5390.7%−32%

97Van Buren County, IAIA7,1310.6%−42%

98Adams County, IAIA3,6170.5%+55%

99Delaware County, IAIA17,6740.3%−17%

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