Ranking of South Dakota 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)

Updated on September 5, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, the percentage of the South Dakota White Alone population (aged 25 years and above) who had an educational attainment of High School Graduate or Equivalent was 29.91%. Among all South Dakota counties, Ziebach 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 (48.85%), followed by Haakon County (46.37%), and Clark County (45.83%).

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, and for other races and ethnicities.

You can also see similar information for other states and for the United States.

Ranking of South Dakota Counties By Percentage of White Alone Population (Aged 25yrs+) with an Educational Attainment of High School Graduate or Equivalent in 2021
Ziebach County
Haakon County
Clark County
Sanborn County
Jerauld County
Miner County
Tripp County
Potter County
Hamlin County
Jackson County
Ranking of South Dakota Counties By Percentage of White Alone 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 Ziebach County 48.85
2 Haakon County 46.37
3 Clark County 45.83
4 Sanborn County 45.11
5 Jerauld County 44.94
6 Miner County 42.07
7 Tripp County 41.26
8 Potter County 40.75
9 Hamlin County 40.56
10 Jackson County 39.63
11 Butte County 39.47
12 Grant County 39.45
12 Kingsbury County 39.45
13 Walworth County 39.06
14 McPherson County 38.74
15 Codington County 38.73
16 Gregory County 38.57
17 Dewey County 38.20
18 Day County 38.09
19 Aurora County 37.49
20 Roberts County 37.05
21 Custer County 37.03
22 Hanson County 36.99
23 Corson County 36.13
24 Deuel County 35.85
25 McCook County 35.73
26 Sully County 35.63
27 Hyde County 35.25
28 Beadle County 35.16
29 Harding County 35.01
30 Fall River County 34.95
31 Bennett County 34.82
32 Davison County 34.77
33 Perkins County 34.65
34 Stanley County 34.61
35 Charles Mix County 34.19
36 Mellette County 33.76
37 Turner County 33.24
38 Edmunds County 32.95
38 Yankton County 32.95
39 Brule County 32.94
40 Spink County 32.46
41 Lyman County 32.25
42 Douglas County 32.11
43 Jones County 31.99
44 Marshall County 31.48
45 Bon Homme County 31.28
46 Moody County 31.15
47 Campbell County 31.01
48 Faulk County 30.91
49 Meade County 30.85
50 Brown County 30.60
51 Hand County 30.59
52 Buffalo County 30.27
53 Hutchinson County 29.45
54 Hughes County 28.90
55 Union County 28.50
56 Lawrence County 28.21
57 Pennington County 27.82
58 Lake County 27.27
59 Clay County 26.01
60 Brookings County 25.76
61 Minnehaha County 24.80
62 Todd County 24.79
63 Lincoln County 23.64
64 Oglala Lakota County 20.72