RANKING · 2020 CENSUS · 99 SHOWN OF 99

Highest Norwegian population share, Iowa counties · 2020

Iowa counties ranked by the share of all residents who are Norwegian ancestry (2023 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.

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

RANKPLACESTATEPOPNORWEGIAN SHAREVS 2000

01Winnebago County, IAIA10,25132.3%–

02Worth County, IAIA7,33828.5%–

03Winneshiek County, IAIA19,73326.7%–

04Allamakee County, IAIA14,23817.9%–

05Howard County, IAIA9,41517.4%–

06Humboldt County, IAIA9,40915.2%–

07Mitchell County, IAIA10,65014.2%–

08Hancock County, IAIA10,52813.8%–

09Wright County, IAIA12,80113.7%–

10Cerro Gordo County, IAIA42,37213.4%–

11Emmet County, IAIA9,10713.3%–

12Hamilton County, IAIA14,94412.4%–

13Palo Alto County, IAIA8,89911.5%–

14Clay County, IAIA16,2029.8%–

15Fayette County, IAIA19,0479.7%–

16Story County, IAIA101,2919.5%–

17Kossuth County, IAIA14,3228.7%–

18Dickinson County, IAIA18,0778.5%–

19Clayton County, IAIA16,8458.0%–

20Monona County, IAIA8,5397.9%–

21O'Brien County, IAIA14,2207.8%–

22Boone County, IAIA26,7997.8%–

23Hardin County, IAIA16,4557.5%–

24Chickasaw County, IAIA11,6637.4%–

25Webster County, IAIA36,8387.3%–

26Floyd County, IAIA14,9016.3%–

27Bremer County, IAIA25,2966.1%–

28Franklin County, IAIA9,8685.0%–

29Benton County, IAIA26,0044.8%–

30Dallas County, IAIA118,4574.7%–

31Pocahontas County, IAIA6,8194.6%–

32Johnson County, IAIA160,0444.5%–

33Osceola County, IAIA5,9804.5%–

34Black Hawk County, IAIA131,5324.5%–

35Buchanan County, IAIA20,8834.3%–

36Lyon County, IAIA12,3544.3%–

37Polk County, IAIA516,5464.2%–

38Plymouth County, IAIA25,6974.2%–

39Woodbury County, IAIA106,6494.1%–

40Linn County, IAIA232,0284.0%–

41Marshall County, IAIA39,8903.9%–

42Jefferson County, IAIA15,2913.8%–

43Buena Vista County, IAIA20,4493.8%–

44Guthrie County, IAIA10,7823.7%–

45Iowa County, IAIA16,5043.6%–

46Calhoun County, IAIA9,5623.6%–

47Poweshiek County, IAIA18,3683.6%–

48Mills County, IAIA14,7933.5%–

49Shelby County, IAIA11,6893.5%–

50Warren County, IAIA57,3313.4%–

51Decatur County, IAIA7,6553.4%–

52Butler County, IAIA14,0493.4%–

53Grundy County, IAIA12,3613.4%–

54Madison County, IAIA17,2703.2%–

55Ida County, IAIA6,7773.1%–

56Tama County, IAIA16,7963.1%–

57Lucas County, IAIA8,8473.0%–

58Marion County, IAIA34,1922.9%–

59Crawford County, IAIA16,2372.9%–

60Greene County, IAIA8,6582.8%–

61Dubuque County, IAIA99,3812.8%–

62Sac County, IAIA9,5252.7%–

63Jasper County, IAIA38,1532.6%–

64Adams County, IAIA3,6172.6%–

65Sioux County, IAIA36,7742.6%–

66Henry County, IAIA19,3492.6%–

67Mahaska County, IAIA21,8802.5%–

68Carroll County, IAIA20,3032.5%–

69Cherokee County, IAIA11,3692.5%–

70Montgomery County, IAIA10,0022.5%–

71Harrison County, IAIA14,6232.5%–

72Wayne County, IAIA6,7382.5%–

73Clinton County, IAIA46,0022.5%–

74Union County, IAIA11,8292.4%–

75Washington County, IAIA22,6672.3%–

76Cedar County, IAIA18,3592.3%–

77Pottawattamie County, IAIA92,9962.2%–

78Clarke County, IAIA9,5742.1%–

79Scott County, IAIA175,2592.0%–

80Page County, IAIA14,8562.0%–

81Muscatine County, IAIA41,8531.9%–

82Audubon County, IAIA5,5091.9%–

83Jones County, IAIA21,2531.8%–

84Jackson County, IAIA19,2881.8%–

85Appanoose County, IAIA12,0771.7%–

86Cass County, IAIA12,9601.7%–

87Louisa County, IAIA10,4161.6%–

88Delaware County, IAIA17,6741.5%–

89Des Moines County, IAIA38,0771.5%–

90Adair County, IAIA7,4031.5%–

91Fremont County, IAIA6,5221.5%–

92Keokuk County, IAIA9,7971.4%–

93Lee County, IAIA32,3061.4%–

94Wapello County, IAIA35,2101.3%–

95Taylor County, IAIA5,8351.2%–

96Davis County, IAIA9,2301.1%–

97Ringgold County, IAIA4,6421.0%–

98Monroe County, IAIA7,4060.9%–

99Van Buren County, IAIA7,1310.8%–

SHOWING 1–99 OF 99

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