Ranking of Iowa Counties By Population with British Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 15.54K people in Iowa with British ancestry. Among all Iowa counties, Polk County had the highest population with British ancestry (2.69K), followed by Linn County (1.69K), and Johnson County (1.08K).
The chart and table below shows the top 10 counties with high number of people with British 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 Population with British Ancestry in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | Polk County | 2690 |
| 2 | Linn County | 1692 |
| 3 | Johnson County | 1084 |
| 4 | Scott County | 1010 |
| 5 | Story County | 959 |
| 6 | Dallas County | 704 |
| 7 | Black Hawk County | 549 |
| 8 | Woodbury County | 466 |
| 9 | Muscatine County | 387 |
| 9 | Warren County | 387 |
| 10 | Pottawattamie County | 338 |
| 11 | Wapello County | 335 |
| 12 | Dubuque County | 326 |
| 13 | Marion County | 245 |
| 14 | Lee County | 234 |
| 15 | Jefferson County | 190 |
| 16 | Marshall County | 166 |
| 17 | Boone County | 156 |
| 18 | Des Moines County | 154 |
| 19 | Poweshiek County | 149 |
| 20 | Clinton County | 141 |
| 21 | Benton County | 136 |
| 22 | Jasper County | 135 |
| 23 | Madison County | 130 |
| 24 | Union County | 108 |
| 25 | Webster County | 103 |
| 26 | Hamilton County | 97 |
| 27 | Cerro Gordo County | 94 |
| 28 | Wright County | 91 |
| 29 | Cedar County | 85 |
| 30 | Washington County | 83 |
| 31 | Greene County | 78 |
| 32 | Bremer County | 77 |
| 32 | Henry County | 77 |
| 33 | Montgomery County | 72 |
| 34 | Hardin County | 67 |
| 35 | Sioux County | 66 |
| 36 | Emmet County | 61 |
| 37 | Fayette County | 60 |
| 37 | Tama County | 60 |
| 38 | Clayton County | 59 |
| 39 | Monroe County | 56 |
| 40 | Plymouth County | 54 |
| 40 | Sac County | 54 |
| 41 | Winneshiek County | 53 |
| 42 | Carroll County | 50 |
| 42 | Harrison County | 50 |
| 43 | Cherokee County | 49 |
| 43 | Keokuk County | 49 |
| 44 | Clay County | 48 |
| 45 | Jackson County | 47 |
| 46 | Iowa County | 46 |
| 47 | Decatur County | 44 |
| 47 | Hancock County | 44 |
| 48 | Mills County | 40 |
| 48 | Winnebago County | 40 |
| 49 | Appanoose County | 39 |
| 50 | Cass County | 36 |
| 51 | Butler County | 34 |
| 52 | Calhoun County | 32 |
| 52 | Lucas County | 32 |
| 53 | Franklin County | 31 |
| 53 | Kossuth County | 31 |
| 54 | Audubon County | 29 |
| 55 | Mahaska County | 27 |
| 56 | Dickinson County | 26 |
| 56 | Howard County | 26 |
| 57 | Buchanan County | 24 |
| 57 | Fremont County | 24 |
| 58 | Buena Vista County | 23 |
| 59 | Davis County | 22 |
| 60 | Wayne County | 21 |
| 61 | Grundy County | 20 |
| 62 | Lyon County | 19 |
| 62 | Monona County | 19 |
| 62 | Taylor County | 19 |
| 63 | Guthrie County | 17 |
| 63 | Humboldt County | 17 |
| 64 | Clarke County | 16 |
| 65 | Chickasaw County | 13 |
| 65 | Page County | 13 |
| 65 | Pocahontas County | 13 |
| 66 | Delaware County | 12 |
| 67 | Louisa County | 11 |
| 67 | Shelby County | 11 |
| 68 | Jones County | 10 |
| 69 | Floyd County | 6 |
| 70 | Crawford County | 5 |
| 70 | O'Brien County | 5 |
| 70 | Palo Alto County | 5 |
| 70 | Ringgold County | 5 |
| 71 | Allamakee County | 4 |
| 71 | Ida County | 4 |
| 71 | Van Buren County | 4 |
| 72 | Adair County | 3 |
| 72 | Worth County | 3 |
| 73 | Adams County | 1 |
| 73 | Mitchell County | 1 |
| 73 | Osceola County | 1 |