Ranking of Iowa Counties By Percentage of Non-Hispanic 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 Non-Hispanic White Alone population (aged 25 years and above) who had an educational attainment of High School Graduate or Equivalent was 31.20%. Among all Iowa counties, Clarke County had the highest percentage of its Non-Hispanic White Alone population (aged 25 years and above) with an educational attainment of High School Graduate or Equivalent (45.46%), followed by Chickasaw County (45.39%), and Clayton County (43.78%).
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 | Clarke County | 45.46 |
| 2 | Chickasaw County | 45.39 |
| 3 | Clayton County | 43.78 |
| 4 | Keokuk County | 43.48 |
| 5 | Delaware County | 43.34 |
| 6 | Lucas County | 42.56 |
| 7 | Jackson County | 42.49 |
| 8 | Fayette County | 42.28 |
| 9 | Wayne County | 42.02 |
| 10 | Cherokee County | 41.58 |
| 11 | Allamakee County | 41.29 |
| 12 | Monroe County | 41.06 |
| 13 | Adair County | 40.89 |
| 14 | Tama County | 40.76 |
| 15 | Lyon County | 40.43 |
| 16 | Howard County | 40.25 |
| 17 | Louisa County | 40.24 |
| 18 | Osceola County | 40.13 |
| 19 | Jasper County | 39.91 |
| 20 | Ida County | 39.85 |
| 21 | Monona County | 39.46 |
| 21 | Page County | 39.46 |
| 22 | Mahaska County | 39.45 |
| 23 | Poweshiek County | 39.34 |
| 24 | Harrison County | 39.27 |
| 25 | Floyd County | 39.05 |
| 26 | Taylor County | 39.04 |
| 27 | Crawford County | 38.98 |
| 28 | Wapello County | 38.83 |
| 29 | Ringgold County | 38.71 |
| 30 | Van Buren County | 38.63 |
| 31 | Humboldt County | 38.61 |
| 32 | Cedar County | 38.52 |
| 33 | Decatur County | 38.49 |
| 33 | Jones County | 38.49 |
| 34 | Calhoun County | 38.43 |
| 35 | Clinton County | 38.38 |
| 36 | Greene County | 38.25 |
| 37 | Washington County | 37.83 |
| 38 | Fremont County | 37.57 |
| 39 | Wright County | 37.48 |
| 40 | Iowa County | 37.41 |
| 41 | O'Brien County | 37.39 |
| 42 | Butler County | 37.33 |
| 42 | Marshall County | 37.33 |
| 43 | Lee County | 37.26 |
| 44 | Emmet County | 37.25 |
| 45 | Franklin County | 37.09 |
| 46 | Benton County | 37.00 |
| 47 | Sac County | 36.84 |
| 48 | Pocahontas County | 36.64 |
| 49 | Hancock County | 36.50 |
| 50 | Hardin County | 36.41 |
| 51 | Plymouth County | 36.25 |
| 52 | Audubon County | 36.08 |
| 53 | Adams County | 35.76 |
| 54 | Webster County | 35.66 |
| 55 | Guthrie County | 35.61 |
| 56 | Appanoose County | 35.57 |
| 57 | Kossuth County | 35.44 |
| 57 | Mitchell County | 35.44 |
| 58 | Henry County | 35.41 |
| 59 | Buchanan County | 35.26 |
| 60 | Shelby County | 35.18 |
| 61 | Worth County | 35.15 |
| 62 | Carroll County | 35.07 |
| 63 | Cass County | 34.66 |
| 64 | Cerro Gordo County | 34.47 |
| 65 | Madison County | 34.29 |
| 66 | Winneshiek County | 34.06 |
| 67 | Marion County | 34.03 |
| 68 | Union County | 33.94 |
| 69 | Montgomery County | 33.91 |
| 70 | Winnebago County | 33.70 |
| 71 | Clay County | 33.66 |
| 72 | Hamilton County | 33.60 |
| 73 | Muscatine County | 33.57 |
| 74 | Grundy County | 33.45 |
| 75 | Buena Vista County | 33.43 |
| 76 | Woodbury County | 33.37 |
| 77 | Dubuque County | 33.28 |
| 78 | Pottawattamie County | 32.92 |
| 79 | Des Moines County | 32.89 |
| 80 | Boone County | 31.99 |
| 81 | Mills County | 31.60 |
| 82 | Bremer County | 30.92 |
| 83 | Black Hawk County | 30.14 |
| 84 | Warren County | 29.61 |
| 85 | Palo Alto County | 29.39 |
| 86 | Davis County | 29.03 |
| 87 | Sioux County | 28.97 |
| 88 | Scott County | 27.61 |
| 89 | Dickinson County | 27.20 |
| 90 | Jefferson County | 26.79 |
| 91 | Linn County | 25.77 |
| 92 | Polk County | 24.66 |
| 93 | Dallas County | 19.11 |
| 94 | Story County | 17.63 |
| 95 | Johnson County | 14.93 |
