RANKING · 2010 CENSUS · 99 SHOWN OF 99

Highest Norwegian population share, Iowa counties · 2010

Iowa counties ranked by the share of all residents who are Norwegian ancestry (2010 American Community Survey). A concentration measure: Norwegian residents as a percentage of total population. This list covers the 99 counties in Iowa that qualify, ranked against each other statewide. The median across all 99 is 4.1%.

Norwegian Americans: full group profile →

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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

RANKPLACESTATEPOPNORWEGIAN SHAREVS –

01Winnebago County, IAIA10,25140.3%–

02Worth County, IAIA7,33835.2%–

03Winneshiek County, IAIA19,73330.1%–

04Howard County, IAIA9,41522.5%–

05Allamakee County, IAIA14,23822.2%–

06Hancock County, IAIA10,52818.8%–

07Wright County, IAIA12,80117.9%–

08Emmet County, IAIA9,10716.8%–

09Hamilton County, IAIA14,94416.4%–

10Humboldt County, IAIA9,40916.2%–

11Mitchell County, IAIA10,65015.2%–

12Cerro Gordo County, IAIA42,37215.1%–

13Kossuth County, IAIA14,32212.0%–

14Palo Alto County, IAIA8,89911.4%–

15Fayette County, IAIA19,04711.4%–

16Hardin County, IAIA16,45510.6%–

17Story County, IAIA101,29110.5%–

18Clayton County, IAIA16,84510.1%–

19Webster County, IAIA36,8389.5%–

20Dickinson County, IAIA18,0779.4%–

21Lyon County, IAIA12,3549.4%–

22Monona County, IAIA8,5399.4%–

23Floyd County, IAIA14,9018.7%–

24Chickasaw County, IAIA11,6637.8%–

25Clay County, IAIA16,2027.7%–

26Pocahontas County, IAIA6,8197.1%–

27Boone County, IAIA26,7997.1%–

28Franklin County, IAIA9,8686.6%–

29Marshall County, IAIA39,8906.5%–

30Woodbury County, IAIA106,6495.9%–

31Bremer County, IAIA25,2965.9%–

32Black Hawk County, IAIA131,5325.9%–

33Osceola County, IAIA5,9805.7%–

34Cherokee County, IAIA11,3695.5%–

35Buchanan County, IAIA20,8835.5%–

36Dallas County, IAIA118,4575.4%–

37O'Brien County, IAIA14,2205.3%–

38Linn County, IAIA232,0285.3%–

39Polk County, IAIA516,5465.1%–

40Calhoun County, IAIA9,5625.1%–

41Benton County, IAIA26,0045.0%–

42Plymouth County, IAIA25,6974.7%–

43Shelby County, IAIA11,6894.5%–

44Grundy County, IAIA12,3614.5%–

45Sac County, IAIA9,5254.4%–

46Buena Vista County, IAIA20,4494.4%–

47Jasper County, IAIA38,1534.3%–

48Warren County, IAIA57,3314.3%–

49Ida County, IAIA6,7774.2%–

50Crawford County, IAIA16,2374.1%–

51Butler County, IAIA14,0494.0%–

52Tama County, IAIA16,7964.0%–

53Johnson County, IAIA160,0443.9%–

54Poweshiek County, IAIA18,3683.9%–

55Sioux County, IAIA36,7743.8%–

56Mills County, IAIA14,7933.8%–

57Madison County, IAIA17,2703.5%–

58Delaware County, IAIA17,6743.5%–

59Cedar County, IAIA18,3593.5%–

60Iowa County, IAIA16,5043.4%–

61Harrison County, IAIA14,6233.4%–

62Davis County, IAIA9,2303.4%–

63Greene County, IAIA8,6583.4%–

64Guthrie County, IAIA10,7823.4%–

65Marion County, IAIA34,1923.1%–

66Mahaska County, IAIA21,8803.1%–

67Pottawattamie County, IAIA92,9963.0%–

68Montgomery County, IAIA10,0023.0%–

69Washington County, IAIA22,6673.0%–

70Adair County, IAIA7,4032.9%–

71Clinton County, IAIA46,0022.9%–

72Cass County, IAIA12,9602.8%–

73Jackson County, IAIA19,2882.7%–

74Clarke County, IAIA9,5742.6%–

75Scott County, IAIA175,2592.6%–

76Lucas County, IAIA8,8472.6%–

77Audubon County, IAIA5,5092.5%–

78Keokuk County, IAIA9,7972.5%–

79Carroll County, IAIA20,3032.5%–

80Dubuque County, IAIA99,3812.4%–

81Adams County, IAIA3,6172.3%–

82Decatur County, IAIA7,6552.2%–

83Ringgold County, IAIA4,6422.2%–

84Henry County, IAIA19,3492.0%–

85Wapello County, IAIA35,2101.9%–

86Des Moines County, IAIA38,0771.8%–

87Jones County, IAIA21,2531.8%–

88Muscatine County, IAIA41,8531.6%–

89Wayne County, IAIA6,7381.6%–

90Lee County, IAIA32,3061.5%–

91Louisa County, IAIA10,4161.4%–

92Page County, IAIA14,8561.4%–

93Union County, IAIA11,8291.4%–

94Fremont County, IAIA6,5221.3%–

95Jefferson County, IAIA15,2911.3%–

96Taylor County, IAIA5,8350.9%–

97Monroe County, IAIA7,4060.7%–

98Appanoose County, IAIA12,0770.7%–

99Van Buren County, IAIA7,1310.5%–

SHOWING 1–99 OF 99

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS