RANKING · 2024 ACS · 99 SHOWN OF 99

Largest foreign-born population, Iowa counties

Iowa counties with the most residents born outside the United States, as of the 2024 American Community Survey. Ranked by number of people, not share. This list covers the 99 counties in Iowa that qualify, ranked against each other statewide.

IowaAll states All rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPFOREIGN-BORN POPULATIONVS 2010

01Polk County, IAIA516,54650,787+50%

02Johnson County, IAIA160,04415,372+42%

03Linn County, IAIA232,02812,841+111%

04Woodbury County, IAIA106,64911,228+38%

05Dallas County, IAIA118,45711,214+164%

06Story County, IAIA101,2918,645+20%

07Black Hawk County, IAIA131,5328,481+46%

08Scott County, IAIA175,2598,384+45%

09Marshall County, IAIA39,8905,856+49%

10Buena Vista County, IAIA20,4494,416+43%

11Pottawattamie County, IAIA92,9963,738+19%

12Wapello County, IAIA35,2103,510+78%

13Dubuque County, IAIA99,3813,252+105%

14Sioux County, IAIA36,7743,092+55%

15Muscatine County, IAIA41,8532,901−10%

16Crawford County, IAIA16,2372,850+36%

17Jefferson County, IAIA15,2912,215+6%

18Webster County, IAIA36,8381,119+38%

19Cerro Gordo County, IAIA42,3721,095+12%

20Jasper County, IAIA38,1531,053+176%

21Allamakee County, IAIA14,2381,018+44%

22Louisa County, IAIA10,416999+19%

23Plymouth County, IAIA25,697959+198%

24Hamilton County, IAIA14,944951+170%

25Clinton County, IAIA46,002936+59%

26Des Moines County, IAIA38,077899+14%

27Franklin County, IAIA9,868844+48%

28Wright County, IAIA12,801837+48%

29Warren County, IAIA57,331823+57%

30Washington County, IAIA22,667730+21%

31Marion County, IAIA34,192701+29%

32Tama County, IAIA16,796685+16%

33Poweshiek County, IAIA18,368672+55%

34Clarke County, IAIA9,574638+32%

35Lee County, IAIA32,306634+22%

36O'Brien County, IAIA14,220627+99%

37Hardin County, IAIA16,455604+88%

38Winneshiek County, IAIA19,733514+25%

39Kossuth County, IAIA14,322498+388%

40Mahaska County, IAIA21,880492+54%

41Humboldt County, IAIA9,409421+172%

42Cherokee County, IAIA11,369413+195%

43Clay County, IAIA16,202409+21%

44Henry County, IAIA19,349409−58%

45Fayette County, IAIA19,047407+68%

46Bremer County, IAIA25,296403+26%

47Boone County, IAIA26,799392+82%

48Clayton County, IAIA16,845384+25%

49Winnebago County, IAIA10,251372+11%

50Floyd County, IAIA14,901369+26%

51Lucas County, IAIA8,847354+28%

52Osceola County, IAIA5,980352+97%

53Chickasaw County, IAIA11,663351+76%

54Jones County, IAIA21,253338+89%

55Butler County, IAIA14,049323+141%

56Carroll County, IAIA20,303323+147%

57Emmet County, IAIA9,107311−18%

58Madison County, IAIA17,270301+198%

59Page County, IAIA14,856282−11%

60Buchanan County, IAIA20,883261+56%

61Lyon County, IAIA12,354239+199%

62Hancock County, IAIA10,528229+39%

63Sac County, IAIA9,525228+18%

64Pocahontas County, IAIA6,819222+147%

65Union County, IAIA11,829220+233%

66Dickinson County, IAIA18,077219+21%

67Howard County, IAIA9,415219+138%

68Palo Alto County, IAIA8,899218+269%

69Benton County, IAIA26,004216−15%

70Grundy County, IAIA12,361214+296%

71Guthrie County, IAIA10,782201+69%

72Shelby County, IAIA11,689192+220%

73Mitchell County, IAIA10,650191+71%

74Taylor County, IAIA5,835187+25%

75Ida County, IAIA6,777177+277%

76Mills County, IAIA14,793172−32%

77Iowa County, IAIA16,504166+68%

78Cedar County, IAIA18,359164−28%

79Montgomery County, IAIA10,002163−24%

80Appanoose County, IAIA12,077160+90%

81Jackson County, IAIA19,288154+26%

82Decatur County, IAIA7,655146−35%

83Davis County, IAIA9,230131+152%

84Greene County, IAIA8,658126−2%

85Adair County, IAIA7,403122+213%

86Cass County, IAIA12,960120−29%

87Harrison County, IAIA14,623117−14%

88Fremont County, IAIA6,522106+29%

89Keokuk County, IAIA9,797101+17%

90Calhoun County, IAIA9,56296+43%

91Audubon County, IAIA5,50993+133%

92Worth County, IAIA7,33865+20%

93Wayne County, IAIA6,73861−66%

94Delaware County, IAIA17,67457−19%

95Monona County, IAIA8,53957−37%

96Monroe County, IAIA7,40656−54%

97Van Buren County, IAIA7,13145−44%

98Ringgold County, IAIA4,64234−62%

99Adams County, IAIA3,61719+36%

SHOWING 1–99 OF 99

Download CSV (full list, 99 rows)

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