RANKING · 2024 ACS · 96 SHOWN OF 96

Highest Swiss population share, Iowa counties

Iowa counties ranked by the share of all residents who are Swiss ancestry (2023 American Community Survey). A concentration measure: Swiss residents as a percentage of total population. This list covers the 96 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 SHAREVS 2000

01Howard County, IAIA9,4155.1%–

02Washington County, IAIA22,6673.8%–

03Wayne County, IAIA6,7382.2%–

04Davis County, IAIA9,2302.0%–

05Fayette County, IAIA19,0471.9%–

06Lyon County, IAIA12,3541.7%–

07Jones County, IAIA21,2531.6%–

08Henry County, IAIA19,3491.6%–

09Palo Alto County, IAIA8,8991.6%–

10Jackson County, IAIA19,2881.5%–

11Clayton County, IAIA16,8451.2%–

12Mitchell County, IAIA10,6501.2%–

13Taylor County, IAIA5,8351.1%–

14Jefferson County, IAIA15,2911.1%–

15Des Moines County, IAIA38,0771.0%–

16Delaware County, IAIA17,6741.0%–

17Van Buren County, IAIA7,1310.9%–

18Decatur County, IAIA7,6550.8%–

19Union County, IAIA11,8290.7%–

20Iowa County, IAIA16,5040.6%–

21Kossuth County, IAIA14,3220.6%–

22Dubuque County, IAIA99,3810.6%–

23Johnson County, IAIA160,0440.6%–

24Chickasaw County, IAIA11,6630.6%–

25Floyd County, IAIA14,9010.5%–

26Harrison County, IAIA14,6230.5%–

27Madison County, IAIA17,2700.5%–

28Story County, IAIA101,2910.5%–

29Linn County, IAIA232,0280.5%–

30Dallas County, IAIA118,4570.5%–

31Ida County, IAIA6,7770.4%–

32Buchanan County, IAIA20,8830.4%–

33Black Hawk County, IAIA131,5320.4%–

34Montgomery County, IAIA10,0020.4%–

35Cedar County, IAIA18,3590.4%–

36Allamakee County, IAIA14,2380.4%–

37O'Brien County, IAIA14,2200.4%–

38Sioux County, IAIA36,7740.4%–

39Cerro Gordo County, IAIA42,3720.3%–

40Marshall County, IAIA39,8900.3%–

41Winnebago County, IAIA10,2510.3%–

42Guthrie County, IAIA10,7820.3%–

43Jasper County, IAIA38,1530.3%–

44Clinton County, IAIA46,0020.3%–

45Louisa County, IAIA10,4160.3%–

46Scott County, IAIA175,2590.3%–

47Benton County, IAIA26,0040.3%–

48Marion County, IAIA34,1920.3%–

49Clay County, IAIA16,2020.3%–

50Calhoun County, IAIA9,5620.3%–

51Woodbury County, IAIA106,6490.3%–

52Adams County, IAIA3,6170.2%–

53Poweshiek County, IAIA18,3680.2%–

54Appanoose County, IAIA12,0770.2%–

55Warren County, IAIA57,3310.2%–

56Polk County, IAIA516,5460.2%–

57Muscatine County, IAIA41,8530.2%–

58Webster County, IAIA36,8380.2%–

59Hancock County, IAIA10,5280.2%–

60Humboldt County, IAIA9,4090.2%–

61Mills County, IAIA14,7930.2%–

62Bremer County, IAIA25,2960.2%–

63Wright County, IAIA12,8010.2%–

64Fremont County, IAIA6,5220.2%–

65Pottawattamie County, IAIA92,9960.2%–

66Boone County, IAIA26,7990.2%–

67Butler County, IAIA14,0490.2%–

68Hardin County, IAIA16,4550.2%–

69Lee County, IAIA32,3060.2%–

70Dickinson County, IAIA18,0770.2%–

71Cass County, IAIA12,9600.1%–

72Cherokee County, IAIA11,3690.1%–

73Winneshiek County, IAIA19,7330.1%–

74Page County, IAIA14,8560.1%–

75Crawford County, IAIA16,2370.1%–

76Clarke County, IAIA9,5740.1%–

77Shelby County, IAIA11,6890.1%–

78Tama County, IAIA16,7960.1%–

79Pocahontas County, IAIA6,8190.1%–

80Carroll County, IAIA20,3030.1%–

81Plymouth County, IAIA25,6970.1%–

82Mahaska County, IAIA21,8800.1%–

83Adair County, IAIA7,4030.1%–

84Monroe County, IAIA7,4060.1%–

85Wapello County, IAIA35,2100.1%–

86Hamilton County, IAIA14,9440.1%–

87Audubon County, IAIA5,5090.1%–

88Keokuk County, IAIA9,7970.1%–

89Monona County, IAIA8,5390.1%–

90Ringgold County, IAIA4,6420.1%–

91Sac County, IAIA9,5250.1%–

92Grundy County, IAIA12,3610.0%–

93Greene County, IAIA8,6580.0%–

94Worth County, IAIA7,3380.0%–

95Buena Vista County, IAIA20,4490.0%–

96Osceola County, IAIA5,9800.0%–

SHOWING 1–96 OF 96

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