Ranking of South Dakota Counties By Percentage of Population Aged 25 years and above with an Educational attainment of High School Graduate or Equivalent in 2021 (ACS-5Yrs)
Updated on September 3, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the percentage of the population of South Dakota (aged 25 years and above) who had an educational attainment of High School Graduate or Equivalent was 30.12%. Among all South Dakota counties, Haakon County had the highest percentage of its population (aged 25 years and above) with an educational attainment of High School Graduate or Equivalent (46.48%), followed by Clark County (44.89%), and Jerauld County (44.57%).
The chart below shows the top 10 South Dakota counties, and the table below shows the ranking of all South Dakota counties.
You can see similar information for other educational attainments.
You can also see similar information for other states and for the United States.
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Related Topics: South Dakota ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates.
Ranking of South Dakota Counties By Percentage of Population (Aged 25yrs+) with an Educational Attainment of High School Graduate or Equivalent in 2021
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| Rank | County | Percentage of Population (Aged 25yrs+) (%) |
|---|---|---|
| 1 | Haakon County | 46.48 |
| 2 | Clark County | 44.89 |
| 3 | Jerauld County | 44.57 |
| 4 | Sanborn County | 43.70 |
| 5 | Miner County | 43.02 |
| 6 | Tripp County | 42.08 |
| 7 | Ziebach County | 42.05 |
| 8 | Buffalo County | 41.14 |
| 9 | Butte County | 40.49 |
| 10 | McPherson County | 39.46 |
| 11 | Hamlin County | 39.33 |
| 12 | Potter County | 39.02 |
| 13 | Codington County | 38.73 |
| 14 | Kingsbury County | 38.65 |
| 15 | Jackson County | 38.59 |
| 16 | Gregory County | 38.51 |
| 17 | Day County | 38.06 |
| 18 | Grant County | 37.72 |
| 19 | Aurora County | 37.65 |
| 20 | Sully County | 36.63 |
| 21 | Mellette County | 36.56 |
| 22 | Dewey County | 36.54 |
| 23 | Hanson County | 36.29 |
| 24 | Stanley County | 36.19 |
| 25 | Fall River County | 36.16 |
| 25 | Roberts County | 36.16 |
| 26 | Deuel County | 36.12 |
| 27 | Custer County | 36.09 |
| 28 | Walworth County | 36.02 |
| 29 | Corson County | 36.01 |
| 30 | McCook County | 35.81 |
| 31 | Charles Mix County | 35.03 |
| 32 | Brule County | 34.90 |
| 33 | Harding County | 34.72 |
| 34 | Jones County | 34.13 |
| 35 | Lyman County | 33.89 |
| 36 | Beadle County | 33.74 |
| 36 | Davison County | 33.74 |
| 37 | Yankton County | 33.63 |
| 38 | Perkins County | 33.51 |
| 39 | Bon Homme County | 33.42 |
| 40 | Edmunds County | 33.35 |
| 41 | Turner County | 32.89 |
| 42 | Hyde County | 32.81 |
| 43 | Douglas County | 32.11 |
| 44 | Moody County | 31.97 |
| 45 | Spink County | 31.71 |
| 46 | Todd County | 31.38 |
| 47 | Campbell County | 30.95 |
| 48 | Marshall County | 30.85 |
| 49 | Brown County | 30.70 |
| 50 | Bennett County | 30.63 |
| 51 | Hutchinson County | 30.61 |
| 52 | Meade County | 30.30 |
| 53 | Faulk County | 30.08 |
| 54 | Oglala Lakota County | 29.96 |
| 55 | Hand County | 29.50 |
| 56 | Hughes County | 29.40 |
| 57 | Pennington County | 28.20 |
| 57 | Union County | 28.20 |
| 58 | Lawrence County | 28.19 |
| 59 | Lake County | 27.45 |
| 60 | Minnehaha County | 25.80 |
| 61 | Clay County | 25.74 |
| 62 | Brookings County | 24.55 |
| 63 | Lincoln County | 23.25 |
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