Ranking of South Dakota Counties By American Indian and Alaska Native Alone Population Aged 25 years and above with an Educational attainment of Less than High School Diploma in 2021 (ACS-5Yrs)

Updated on September 5, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, the South Dakota American Indian and Alaska Native Alone population (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 8,150. Among all South Dakota counties, Oglala Lakota County had the highest American Indian and Alaska Native Alone population (aged 25 years and above) with an educational attainment of Less than High School Diploma (1,915), followed by Todd County (913), and Pennington County (904).

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 American Indian and Alaska Native Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
Oglala Lakota County
Todd County
Pennington County
Minnehaha County
Charles Mix County
Dewey County
Roberts County
Corson County
Jackson County
Bennett County
Ranking of South Dakota Counties By American Indian and Alaska Native Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
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Rank County Number of People
1 Oglala Lakota County 1915
2 Todd County 913
3 Pennington County 904
4 Minnehaha County 410
5 Charles Mix County 388
5 Dewey County 388
6 Roberts County 281
7 Corson County 277
8 Jackson County 194
9 Bennett County 193
9 Mellette County 193
10 Buffalo County 182
11 Hughes County 173
12 Ziebach County 144
13 Lyman County 141
14 Tripp County 134
15 Fall River County 130
16 Yankton County 115
17 Walworth County 105
18 Bon Homme County 80
19 Meade County 67
20 Beadle County 61
21 Day County 60
22 Custer County 59
23 Lawrence County 57
24 Gregory County 55
25 Moody County 47
26 Brookings County 46
26 Perkins County 46
27 Clay County 43
28 Brule County 42
28 Davison County 42
29 Codington County 41
30 Lincoln County 40
31 Brown County 36
32 Jones County 30
33 Marshall County 28
34 Turner County 19
35 Union County 12
36 Potter County 10
37 Deuel County 8
37 Grant County 8
37 Hutchinson County 8
38 Lake County 7
39 Hyde County 6
40 Edmunds County 4
41 Miner County 3
41 Spink County 3
42 Clark County 1
42 Hand County 1
43 Aurora County 0
43 Butte County 0
43 Campbell County 0
43 Douglas County 0
43 Faulk County 0
43 Haakon County 0
43 Hamlin County 0
43 Harding County 0
43 Jerauld County 0
43 Kingsbury County 0
43 McCook County 0
43 McPherson County 0
43 Sanborn County 0
43 Stanley County 0
43 Sully County 0