Ranking of Iowa Counties By Percentage of Population with Scotch Irish Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 21.93K people in Iowa with Scotch Irish ancestry (0.69% of Iowa population). Among all Iowa counties, Ringgold County had the highest percentage of its population with Scotch Irish ancestry (2.19%), followed by Van Buren County (1.90%), and Boone County (1.58%).
The chart and table below shows the top 10 counties with high percentage of its population having Scotch Irish 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 Scotch Irish Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Ringgold County | 2.19 |
| 2 | Van Buren County | 1.90 |
| 3 | Boone County | 1.58 |
| 4 | Mills County | 1.49 |
| 5 | Union County | 1.46 |
| 6 | Appanoose County | 1.45 |
| 7 | Decatur County | 1.34 |
| 8 | Wayne County | 1.31 |
| 9 | Montgomery County | 1.26 |
| 10 | Keokuk County | 1.23 |
| 11 | Washington County | 1.13 |
| 12 | Lucas County | 1.09 |
| 13 | Greene County | 1.02 |
| 13 | Warren County | 1.02 |
| 14 | Dickinson County | 1.01 |
| 15 | Butler County | 0.98 |
| 15 | Des Moines County | 0.98 |
| 16 | Harrison County | 0.97 |
| 16 | Henry County | 0.97 |
| 16 | Iowa County | 0.97 |
| 17 | Hancock County | 0.91 |
| 18 | Franklin County | 0.90 |
| 18 | Monroe County | 0.90 |
| 19 | Wapello County | 0.87 |
| 20 | Guthrie County | 0.83 |
| 20 | Polk County | 0.83 |
| 21 | Audubon County | 0.81 |
| 21 | Black Hawk County | 0.81 |
| 21 | Bremer County | 0.81 |
| 22 | Johnson County | 0.78 |
| 22 | Poweshiek County | 0.78 |
| 23 | Chickasaw County | 0.77 |
| 24 | Clay County | 0.76 |
| 24 | Linn County | 0.76 |
| 25 | Cass County | 0.75 |
| 25 | Davis County | 0.75 |
| 25 | Fremont County | 0.75 |
| 25 | Howard County | 0.75 |
| 26 | Hamilton County | 0.73 |
| 26 | Mitchell County | 0.73 |
| 27 | Palo Alto County | 0.72 |
| 28 | Clarke County | 0.71 |
| 28 | Grundy County | 0.71 |
| 29 | Mahaska County | 0.70 |
| 29 | Sac County | 0.70 |
| 30 | Benton County | 0.68 |
| 30 | Madison County | 0.68 |
| 30 | Pocahontas County | 0.68 |
| 31 | Adair County | 0.67 |
| 31 | Story County | 0.67 |
| 32 | Wright County | 0.66 |
| 33 | Winneshiek County | 0.65 |
| 34 | Buchanan County | 0.64 |
| 34 | Calhoun County | 0.64 |
| 34 | Tama County | 0.64 |
| 34 | Taylor County | 0.64 |
| 35 | Scott County | 0.63 |
| 36 | Marshall County | 0.62 |
| 36 | Plymouth County | 0.62 |
| 36 | Woodbury County | 0.62 |
| 37 | Cerro Gordo County | 0.59 |
| 38 | Fayette County | 0.58 |
| 38 | Sioux County | 0.58 |
| 39 | Adams County | 0.57 |
| 39 | Floyd County | 0.57 |
| 39 | Louisa County | 0.57 |
| 39 | Pottawattamie County | 0.57 |
| 40 | Lee County | 0.55 |
| 41 | Dallas County | 0.53 |
| 41 | Page County | 0.53 |
| 42 | Clayton County | 0.52 |
| 42 | Jasper County | 0.52 |
| 43 | Clinton County | 0.49 |
| 44 | Webster County | 0.47 |
| 45 | Muscatine County | 0.46 |
| 46 | Marion County | 0.43 |
| 47 | Worth County | 0.42 |
| 48 | Hardin County | 0.39 |
| 49 | Allamakee County | 0.38 |
| 49 | Emmet County | 0.38 |
| 50 | Osceola County | 0.37 |
| 51 | Jones County | 0.36 |
| 52 | Jefferson County | 0.35 |
| 53 | Kossuth County | 0.34 |
| 53 | Shelby County | 0.34 |
| 54 | Ida County | 0.32 |
| 55 | Cedar County | 0.31 |
| 56 | Jackson County | 0.30 |
| 57 | Winnebago County | 0.27 |
| 58 | Dubuque County | 0.26 |
| 59 | Monona County | 0.25 |
| 60 | Buena Vista County | 0.22 |
| 61 | Humboldt County | 0.16 |
| 62 | Carroll County | 0.12 |
| 63 | Cherokee County | 0.10 |
| 63 | Crawford County | 0.10 |
| 64 | Delaware County | 0.08 |
| 65 | Lyon County | 0.05 |
| 65 | O'Brien County | 0.05 |