Ranking of Iowa Counties By Percentage of White Alone Population Aged 25 years and above with an Educational attainment of High School Graduate or Equivalent in 2021 (ACS-5Yrs)
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 High School Graduate or Equivalent was 31.13%. Among all Iowa counties, Chickasaw County had the highest percentage of its White Alone population (aged 25 years and above) with an educational attainment of High School Graduate or Equivalent (45.38%), followed by Clayton County (43.67%), and Keokuk County (43.39%).
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.
| Rank | County | Percentage of Population (Aged 25yrs+) (%) |
|---|---|---|
| 1 | Chickasaw County | 45.38 |
| 2 | Clayton County | 43.67 |
| 3 | Keokuk County | 43.39 |
| 4 | Delaware County | 43.13 |
| 5 | Lucas County | 42.98 |
| 6 | Clarke County | 42.52 |
| 7 | Fayette County | 42.45 |
| 8 | Wayne County | 42.26 |
| 9 | Jackson County | 42.04 |
| 10 | Cherokee County | 41.38 |
| 11 | Tama County | 41.07 |
| 12 | Monroe County | 41.05 |
| 13 | Allamakee County | 40.78 |
| 14 | Adair County | 40.69 |
| 15 | Lyon County | 40.50 |
| 16 | Howard County | 40.14 |
| 17 | Ida County | 39.88 |
| 18 | Louisa County | 39.77 |
| 19 | Jasper County | 39.67 |
| 20 | Mahaska County | 39.50 |
| 21 | Monona County | 39.38 |
| 22 | Harrison County | 39.35 |
| 23 | Poweshiek County | 39.18 |
| 24 | Page County | 39.11 |
| 25 | Osceola County | 39.04 |
| 26 | Taylor County | 38.99 |
| 27 | Cedar County | 38.82 |
| 28 | Ringgold County | 38.70 |
| 29 | Van Buren County | 38.68 |
| 30 | Floyd County | 38.67 |
| 31 | Calhoun County | 38.45 |
| 32 | Jones County | 38.44 |
| 33 | Wapello County | 38.35 |
| 34 | Wright County | 38.31 |
| 35 | Clinton County | 38.22 |
| 36 | Decatur County | 38.18 |
| 37 | Humboldt County | 38.03 |
| 38 | Greene County | 38.00 |
| 39 | Washington County | 37.59 |
| 40 | Fremont County | 37.48 |
| 41 | Franklin County | 37.46 |
| 42 | O'Brien County | 37.31 |
| 43 | Butler County | 37.25 |
| 44 | Lee County | 37.17 |
| 45 | Iowa County | 37.05 |
| 46 | Crawford County | 37.04 |
| 47 | Benton County | 36.99 |
| 48 | Sac County | 36.71 |
| 49 | Marshall County | 36.65 |
| 50 | Hancock County | 36.62 |
| 51 | Pocahontas County | 36.36 |
| 52 | Hardin County | 36.04 |
| 53 | Henry County | 36.00 |
| 54 | Audubon County | 35.98 |
| 55 | Adams County | 35.97 |
| 56 | Emmet County | 35.90 |
| 57 | Appanoose County | 35.87 |
| 58 | Plymouth County | 35.79 |
| 59 | Worth County | 35.49 |
| 60 | Guthrie County | 35.42 |
| 61 | Mitchell County | 35.21 |
| 62 | Kossuth County | 35.17 |
| 63 | Webster County | 35.16 |
| 64 | Shelby County | 35.07 |
| 65 | Carroll County | 35.02 |
| 66 | Buchanan County | 34.91 |
| 67 | Cass County | 34.38 |
| 68 | Cerro Gordo County | 34.35 |
| 69 | Montgomery County | 34.34 |
| 70 | Winneshiek County | 33.99 |
| 71 | Muscatine County | 33.97 |
| 72 | Union County | 33.88 |
| 73 | Marion County | 33.87 |
| 74 | Madison County | 33.73 |
| 75 | Clay County | 33.62 |
| 76 | Winnebago County | 33.41 |
| 77 | Grundy County | 33.25 |
| 78 | Dubuque County | 33.15 |
| 79 | Hamilton County | 33.05 |
| 80 | Pottawattamie County | 32.75 |
| 81 | Des Moines County | 32.58 |
| 82 | Woodbury County | 32.42 |
| 83 | Buena Vista County | 32.05 |
| 84 | Boone County | 31.98 |
| 85 | Mills County | 31.46 |
| 86 | Bremer County | 30.87 |
| 87 | Black Hawk County | 30.05 |
| 88 | Warren County | 29.66 |
| 89 | Palo Alto County | 29.47 |
| 90 | Davis County | 29.08 |
| 91 | Sioux County | 28.82 |
| 92 | Scott County | 27.92 |
| 93 | Dickinson County | 27.12 |
| 94 | Jefferson County | 27.07 |
| 95 | Linn County | 25.90 |
| 96 | Polk County | 24.99 |
| 97 | Dallas County | 19.38 |
| 98 | Story County | 17.42 |
| 99 | Johnson County | 15.00 |
