RANKING · 2010 CENSUS · 97 SHOWN OF 97

Largest Swiss population, Iowa counties · 2010

Iowa counties ranked by the number of residents who are Swiss 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 97 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

RANKPLACESTATEPOPSWISS POPULATIONVS 2000

01Linn County, IAIA232,0281,461–

02Polk County, IAIA516,5461,290–

03Scott County, IAIA175,259900–

04Dubuque County, IAIA99,381875–

05Johnson County, IAIA160,044849–

06Story County, IAIA101,291619–

07Washington County, IAIA22,667534–

08Black Hawk County, IAIA131,532484–

09Pottawattamie County, IAIA92,996457–

10Dallas County, IAIA118,457451–

11Fayette County, IAIA19,047451–

12Lyon County, IAIA12,354414–

13Clayton County, IAIA16,845385–

14Woodbury County, IAIA106,649319–

15Allamakee County, IAIA14,238269–

16Cerro Gordo County, IAIA42,372238–

17Iowa County, IAIA16,504234–

18Jones County, IAIA21,253234–

19Palo Alto County, IAIA8,899226–

20Des Moines County, IAIA38,077194–

21Davis County, IAIA9,230181–

22Marshall County, IAIA39,890159–

23Boone County, IAIA26,799158–

24Clinton County, IAIA46,002149–

25Dickinson County, IAIA18,077145–

26Kossuth County, IAIA14,322136–

27Warren County, IAIA57,331132–

28Howard County, IAIA9,415130–

29Jasper County, IAIA38,153128–

30Henry County, IAIA19,349127–

31Delaware County, IAIA17,674122–

32Benton County, IAIA26,004120–

33Buchanan County, IAIA20,883115–

34Chickasaw County, IAIA11,663113–

35Decatur County, IAIA7,655112–

36Plymouth County, IAIA25,697111–

37Mitchell County, IAIA10,650110–

38Appanoose County, IAIA12,077107–

39Winneshiek County, IAIA19,733103–

40Carroll County, IAIA20,303102–

41Muscatine County, IAIA41,85399–

42Webster County, IAIA36,83899–

43Cedar County, IAIA18,35992–

44Van Buren County, IAIA7,13191–

45Bremer County, IAIA25,29689–

46Hardin County, IAIA16,45582–

47Floyd County, IAIA14,90180–

48Hamilton County, IAIA14,94479–

49Cherokee County, IAIA11,36975–

50Jackson County, IAIA19,28873–

51Clay County, IAIA16,20271–

52Jefferson County, IAIA15,29170–

53Lucas County, IAIA8,84768–

54Harrison County, IAIA14,62365–

55Mahaska County, IAIA21,88061–

56Mills County, IAIA14,79358–

57Poweshiek County, IAIA18,36858–

58Sioux County, IAIA36,77457–

59Guthrie County, IAIA10,78256–

60Louisa County, IAIA10,41649–

61Keokuk County, IAIA9,79746–

62Buena Vista County, IAIA20,44944–

63Pocahontas County, IAIA6,81944–

64Union County, IAIA11,82942–

65Page County, IAIA14,85641–

66Greene County, IAIA8,65840–

67Montgomery County, IAIA10,00240–

68Winnebago County, IAIA10,25140–

69Osceola County, IAIA5,98039–

70Cass County, IAIA12,96037–

71Monona County, IAIA8,53937–

72Taylor County, IAIA5,83536–

73Calhoun County, IAIA9,56235–

74Butler County, IAIA14,04934–

75Humboldt County, IAIA9,40933–

76Sac County, IAIA9,52532–

77Shelby County, IAIA11,68931–

78Adams County, IAIA3,61729–

79Madison County, IAIA17,27028–

80Lee County, IAIA32,30627–

81Crawford County, IAIA16,23726–

82Grundy County, IAIA12,36124–

83Adair County, IAIA7,40323–

84Ida County, IAIA6,77723–

85Wayne County, IAIA6,73822–

86Worth County, IAIA7,33822–

87Clarke County, IAIA9,57420–

88Wapello County, IAIA35,21020–

89Hancock County, IAIA10,52817–

90Audubon County, IAIA5,50916–

91Tama County, IAIA16,79615–

92Wright County, IAIA12,80114–

93Emmet County, IAIA9,1079–

94Ringgold County, IAIA4,6429–

95Fremont County, IAIA6,5226–

96O'Brien County, IAIA14,2206–

97Marion County, IAIA34,1921–

SHOWING 1–97 OF 97

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