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 (2020 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 3.4%.

Norwegian Americans: full group profile →

IowaAll states All rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPNORWEGIAN SHAREVS 2010

01Winnebago County, IAIA10,25132.3%−8.0 pts

02Worth County, IAIA7,33828.5%−6.7 pts

03Winneshiek County, IAIA19,73326.7%−3.5 pts

04Allamakee County, IAIA14,23817.9%−4.3 pts

05Howard County, IAIA9,41517.4%−5.1 pts

06Humboldt County, IAIA9,40915.2%−1.0 pts

07Mitchell County, IAIA10,65014.2%−1.0 pts

08Hancock County, IAIA10,52813.8%−5.0 pts

09Wright County, IAIA12,80113.7%−4.2 pts

10Cerro Gordo County, IAIA42,37213.4%−1.7 pts

11Emmet County, IAIA9,10713.3%−3.5 pts

12Hamilton County, IAIA14,94412.4%−4.0 pts

13Palo Alto County, IAIA8,89911.5%+0.1 pts

14Clay County, IAIA16,2029.8%+2.1 pts

15Fayette County, IAIA19,0479.7%−1.7 pts

16Story County, IAIA101,2919.5%−1.1 pts

17Kossuth County, IAIA14,3228.7%−3.3 pts

18Dickinson County, IAIA18,0778.5%−1.0 pts

19Clayton County, IAIA16,8458.0%−2.1 pts

20Monona County, IAIA8,5397.9%−1.5 pts

21O'Brien County, IAIA14,2207.8%+2.5 pts

22Boone County, IAIA26,7997.8%+0.7 pts

23Hardin County, IAIA16,4557.5%−3.1 pts

24Chickasaw County, IAIA11,6637.4%−0.4 pts

25Webster County, IAIA36,8387.3%−2.3 pts

26Floyd County, IAIA14,9016.3%−2.4 pts

27Bremer County, IAIA25,2966.1%+0.2 pts

28Franklin County, IAIA9,8685.0%−1.7 pts

29Benton County, IAIA26,0044.8%−0.2 pts

30Dallas County, IAIA118,4574.7%−0.7 pts

31Pocahontas County, IAIA6,8194.6%−2.5 pts

32Johnson County, IAIA160,0444.5%+0.6 pts

33Osceola County, IAIA5,9804.5%−1.2 pts

34Black Hawk County, IAIA131,5324.5%−1.4 pts

35Buchanan County, IAIA20,8834.3%−1.2 pts

36Lyon County, IAIA12,3544.3%−5.2 pts

37Polk County, IAIA516,5464.2%−0.8 pts

38Plymouth County, IAIA25,6974.2%−0.4 pts

39Woodbury County, IAIA106,6494.1%−1.8 pts

40Linn County, IAIA232,0284.0%−1.3 pts

41Marshall County, IAIA39,8903.9%−2.6 pts

42Jefferson County, IAIA15,2913.8%+2.5 pts

43Buena Vista County, IAIA20,4493.8%−0.7 pts

44Guthrie County, IAIA10,7823.7%+0.3 pts

45Iowa County, IAIA16,5043.6%+0.2 pts

46Calhoun County, IAIA9,5623.6%−1.5 pts

47Poweshiek County, IAIA18,3683.6%−0.3 pts

48Mills County, IAIA14,7933.5%−0.2 pts

49Shelby County, IAIA11,6893.5%−1.1 pts

50Warren County, IAIA57,3313.4%−0.8 pts

51Decatur County, IAIA7,6553.4%+1.2 pts

52Butler County, IAIA14,0493.4%−0.6 pts

53Grundy County, IAIA12,3613.4%−1.1 pts

54Madison County, IAIA17,2703.2%−0.4 pts

55Ida County, IAIA6,7773.1%−1.1 pts

56Tama County, IAIA16,7963.1%−0.9 pts

57Lucas County, IAIA8,8473.0%+0.4 pts

58Marion County, IAIA34,1922.9%−0.2 pts

59Crawford County, IAIA16,2372.9%−1.2 pts

60Greene County, IAIA8,6582.8%−0.6 pts

61Dubuque County, IAIA99,3812.8%+0.3 pts

62Sac County, IAIA9,5252.7%−1.7 pts

63Jasper County, IAIA38,1532.6%−1.7 pts

64Adams County, IAIA3,6172.6%+0.3 pts

65Sioux County, IAIA36,7742.6%−1.3 pts

66Henry County, IAIA19,3492.6%+0.6 pts

67Mahaska County, IAIA21,8802.5%−0.6 pts

68Carroll County, IAIA20,3032.5%+0.1 pts

69Cherokee County, IAIA11,3692.5%−3.0 pts

70Montgomery County, IAIA10,0022.5%−0.5 pts

71Harrison County, IAIA14,6232.5%−1.0 pts

72Wayne County, IAIA6,7382.5%+0.9 pts

73Clinton County, IAIA46,0022.5%−0.5 pts

74Union County, IAIA11,8292.4%+1.1 pts

75Washington County, IAIA22,6672.3%−0.7 pts

76Cedar County, IAIA18,3592.3%−1.2 pts

77Pottawattamie County, IAIA92,9962.2%−0.8 pts

78Clarke County, IAIA9,5742.1%−0.5 pts

79Scott County, IAIA175,2592.0%−0.6 pts

80Page County, IAIA14,8562.0%+0.6 pts

81Muscatine County, IAIA41,8531.9%+0.3 pts

82Audubon County, IAIA5,5091.9%−0.6 pts

83Jones County, IAIA21,2531.8%+0.1 pts

84Jackson County, IAIA19,2881.8%−0.8 pts

85Appanoose County, IAIA12,0771.7%+1.0 pts

86Cass County, IAIA12,9601.7%−1.1 pts

87Louisa County, IAIA10,4161.6%+0.1 pts

88Delaware County, IAIA17,6741.5%−1.9 pts

89Des Moines County, IAIA38,0771.5%−0.3 pts

90Adair County, IAIA7,4031.5%−1.4 pts

91Fremont County, IAIA6,5221.5%+0.2 pts

92Keokuk County, IAIA9,7971.4%−1.1 pts

93Lee County, IAIA32,3061.4%−0.1 pts

94Wapello County, IAIA35,2101.3%−0.6 pts

95Taylor County, IAIA5,8351.2%+0.4 pts

96Davis County, IAIA9,2301.1%−2.3 pts

97Ringgold County, IAIA4,6421.0%−1.2 pts

98Monroe County, IAIA7,4060.9%+0.2 pts

99Van Buren County, IAIA7,1310.8%+0.3 pts

SHOWING 1–99 OF 99

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