Ranking of Iowa Counties By Percentage of White Alone Population Aged 25 years and above with an Educational attainment of Bachelors or Higher in 2021 (ACS-5Yrs)
Updated on September 5, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the percentage of the Iowa White Alone population (aged 25 years and above) who had an educational attainment of Bachelors or Higher was 30.05%. Among all Iowa counties, Johnson County had the highest percentage of its White Alone population (aged 25 years and above) with an educational attainment of Bachelors or Higher (55.95%), followed by Dallas County (50.46%), and Story County (49.21%).
The chart below shows the top 10 Iowa counties, and the table below shows the ranking of all Iowa counties.
You can see similar information for other educational attainments, and for other races and ethnicities.
You can also see similar information for other states and for the United States.
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Related Topics: Iowa ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates.
Ranking of Iowa Counties By Percentage of White Alone Population (Aged 25yrs+) with an Educational Attainment of Bachelors or Higher in 2021
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| Rank | County | Percentage of Population (Aged 25yrs+) (%) |
|---|---|---|
| 1 | Johnson County | 55.95 |
| 2 | Dallas County | 50.46 |
| 3 | Story County | 49.21 |
| 4 | Polk County | 40.19 |
| 5 | Jefferson County | 35.22 |
| 6 | Linn County | 35.00 |
| 7 | Scott County | 34.67 |
| 8 | Bremer County | 33.66 |
| 9 | Warren County | 32.79 |
| 10 | Dubuque County | 32.37 |
| 11 | Sioux County | 32.32 |
| 12 | Dickinson County | 32.18 |
| 13 | Black Hawk County | 30.79 |
| 14 | Winneshiek County | 30.48 |
| 15 | Marion County | 30.43 |
| 16 | Poweshiek County | 29.74 |
| 17 | Mills County | 28.88 |
| 18 | Buena Vista County | 26.29 |
| 19 | Grundy County | 25.96 |
| 20 | Boone County | 25.72 |
| 21 | Woodbury County | 25.49 |
| 22 | Decatur County | 25.20 |
| 23 | Hamilton County | 24.78 |
| 24 | Cerro Gordo County | 24.40 |
| 25 | Winnebago County | 24.25 |
| 26 | Plymouth County | 24.21 |
| 27 | Madison County | 24.20 |
| 28 | Clay County | 24.05 |
| 29 | Palo Alto County | 23.93 |
| 30 | Muscatine County | 23.86 |
| 31 | Washington County | 23.83 |
| 32 | Iowa County | 23.12 |
| 33 | Pottawattamie County | 23.07 |
| 34 | Shelby County | 22.82 |
| 35 | Des Moines County | 22.65 |
| 36 | Henry County | 22.23 |
| 37 | Cherokee County | 22.19 |
| 38 | Union County | 21.98 |
| 39 | Carroll County | 21.71 |
| 40 | O'Brien County | 21.68 |
| 41 | Benton County | 21.64 |
| 41 | Buchanan County | 21.64 |
| 42 | Cedar County | 21.62 |
| 43 | Jones County | 21.49 |
| 44 | Clinton County | 21.41 |
| 45 | Calhoun County | 21.33 |
| 46 | Audubon County | 21.31 |
| 47 | Cass County | 21.20 |
| 48 | Adams County | 21.18 |
| 49 | Mahaska County | 21.12 |
| 50 | Marshall County | 21.11 |
| 51 | Mitchell County | 21.00 |
| 52 | Guthrie County | 20.83 |
| 53 | Ringgold County | 20.76 |
| 54 | Greene County | 20.69 |
| 54 | Hancock County | 20.69 |
| 55 | Floyd County | 20.34 |
| 56 | Hardin County | 20.18 |
| 57 | Worth County | 20.00 |
| 58 | Webster County | 19.92 |
| 59 | Jasper County | 19.85 |
| 60 | Lee County | 19.77 |
| 61 | Lyon County | 19.76 |
| 62 | Adair County | 19.64 |
| 63 | Ida County | 19.47 |
| 64 | Wright County | 19.39 |
| 65 | Crawford County | 19.38 |
| 66 | Monroe County | 19.37 |
| 67 | Harrison County | 19.27 |
| 68 | Wapello County | 19.10 |
| 69 | Jackson County | 18.99 |
| 70 | Appanoose County | 18.91 |
| 71 | Kossuth County | 18.86 |
| 72 | Franklin County | 18.85 |
| 73 | Delaware County | 18.80 |
| 74 | Montgomery County | 18.75 |
| 75 | Butler County | 18.61 |
| 76 | Davis County | 18.49 |
| 77 | Chickasaw County | 18.44 |
| 78 | Howard County | 18.33 |
| 79 | Fremont County | 18.23 |
| 80 | Sac County | 18.10 |
| 81 | Humboldt County | 17.86 |
| 82 | Osceola County | 17.71 |
| 83 | Fayette County | 17.68 |
| 84 | Page County | 17.57 |
| 85 | Pocahontas County | 17.56 |
| 86 | Clayton County | 17.51 |
| 87 | Allamakee County | 17.12 |
| 88 | Tama County | 17.04 |
| 89 | Taylor County | 16.88 |
| 90 | Emmet County | 16.64 |
| 91 | Keokuk County | 16.61 |
| 92 | Van Buren County | 15.65 |
| 93 | Louisa County | 15.57 |
| 94 | Clarke County | 15.35 |
| 95 | Wayne County | 15.25 |
| 96 | Monona County | 15.16 |
| 97 | Lucas County | 14.98 |