Ranking of Iowa Counties By Percentage of Population with Norwegian Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 144.59K people in Iowa with Norwegian ancestry (4.55% of Iowa population). Among all Iowa counties, Winnebago County had the highest percentage of its population with Norwegian ancestry (30.74%), followed by Worth County (27.26%), and Winneshiek County (27.23%).
The chart and table below shows the top 10 counties with high percentage of its population having Norwegian ancestry.
You can see similar information for other states and for other ancestry groups in Iowa.
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Related Topics: Iowa ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Iowa Counties By Percentage of Population with Norwegian Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Winnebago County | 30.74 |
| 2 | Worth County | 27.26 |
| 3 | Winneshiek County | 27.23 |
| 4 | Allamakee County | 15.97 |
| 5 | Humboldt County | 15.18 |
| 6 | Howard County | 15.08 |
| 7 | Mitchell County | 13.93 |
| 8 | Hamilton County | 13.60 |
| 9 | Wright County | 13.33 |
| 10 | Hancock County | 13.31 |
| 11 | Cerro Gordo County | 12.91 |
| 12 | Emmet County | 11.85 |
| 13 | Kossuth County | 10.40 |
| 14 | Palo Alto County | 10.07 |
| 15 | Fayette County | 9.88 |
| 16 | Clay County | 9.60 |
| 17 | Story County | 8.81 |
| 18 | Dickinson County | 8.58 |
| 19 | Clayton County | 8.54 |
| 20 | Boone County | 7.66 |
| 21 | Hardin County | 7.49 |
| 22 | Floyd County | 7.05 |
| 23 | Chickasaw County | 7.02 |
| 24 | Webster County | 6.90 |
| 25 | Monona County | 6.87 |
| 26 | O'Brien County | 6.32 |
| 27 | Bremer County | 5.84 |
| 28 | Osceola County | 5.69 |
| 29 | Pocahontas County | 4.94 |
| 30 | Benton County | 4.86 |
| 31 | Dallas County | 4.80 |
| 32 | Buchanan County | 4.78 |
| 33 | Lyon County | 4.66 |
| 34 | Calhoun County | 4.57 |
| 35 | Black Hawk County | 4.48 |
| 36 | Franklin County | 4.21 |
| 37 | Woodbury County | 4.18 |
| 38 | Polk County | 4.12 |
| 39 | Iowa County | 4.07 |
| 40 | Johnson County | 3.95 |
| 41 | Guthrie County | 3.83 |
| 42 | Greene County | 3.78 |
| 43 | Grundy County | 3.70 |
| 44 | Linn County | 3.69 |
| 45 | Shelby County | 3.63 |
| 46 | Warren County | 3.56 |
| 47 | Buena Vista County | 3.54 |
| 48 | Jefferson County | 3.53 |
| 48 | Mills County | 3.53 |
| 49 | Butler County | 3.45 |
| 50 | Plymouth County | 3.43 |
| 51 | Poweshiek County | 3.41 |
| 52 | Marshall County | 3.37 |
| 53 | Madison County | 3.21 |
| 54 | Henry County | 3.19 |
| 55 | Marion County | 3.13 |
| 56 | Tama County | 3.06 |
| 57 | Ida County | 3.05 |
| 58 | Jasper County | 2.93 |
| 59 | Decatur County | 2.89 |
| 60 | Adams County | 2.65 |
| 61 | Dubuque County | 2.54 |
| 62 | Audubon County | 2.48 |
| 63 | Washington County | 2.46 |
| 64 | Union County | 2.45 |
| 65 | Lucas County | 2.32 |
| 66 | Clinton County | 2.31 |
| 66 | Muscatine County | 2.31 |
| 66 | Sac County | 2.31 |
| 67 | Mahaska County | 2.26 |
| 67 | Pottawattamie County | 2.26 |
| 68 | Sioux County | 2.22 |
| 69 | Scott County | 2.20 |
| 70 | Cedar County | 2.19 |
| 70 | Montgomery County | 2.19 |
| 71 | Clarke County | 2.15 |
| 72 | Page County | 2.14 |
| 73 | Cherokee County | 2.09 |
| 74 | Adair County | 2.08 |
| 75 | Harrison County | 1.98 |
| 76 | Wayne County | 1.85 |
| 77 | Carroll County | 1.83 |
| 78 | Des Moines County | 1.81 |
| 79 | Jones County | 1.78 |
| 80 | Delaware County | 1.67 |
| 81 | Jackson County | 1.65 |
| 82 | Crawford County | 1.57 |
| 83 | Lee County | 1.42 |
| 84 | Keokuk County | 1.41 |
| 85 | Monroe County | 1.31 |
| 86 | Fremont County | 1.30 |
| 87 | Ringgold County | 1.20 |
| 88 | Appanoose County | 1.19 |
| 89 | Wapello County | 1.18 |
| 90 | Cass County | 1.15 |
| 91 | Taylor County | 1.10 |
| 92 | Davis County | 0.89 |
| 93 | Louisa County | 0.88 |
| 94 | Van Buren County | 0.65 |
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