Ranking of South Dakota Counties By Percentage of Population with Unclassified Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 172.50K people in South Dakota with Unclassified ancestry (19.56% of South Dakota population). Among all South Dakota counties, Potter County had the highest percentage of its population with Unclassified ancestry (31.46%), followed by Hanson County (31.35%), and Yankton County (29.79%).

The chart and table below shows the top 10 counties with high percentage of its population having Unclassified ancestry.

You can see similar information for other states and for other ancestry groups in South Dakota.

Data Source: US Census Bureau.
Ranking of South Dakota Counties By Percentage of Population with Unclassified Ancestry in 2021
Potter County
Hanson County
Yankton County
Union County
Brule County
Davison County
Hand County
Miner County
Meade County
Harding County
Ranking of South Dakota Counties By Percentage of Population with Unclassified Ancestry in 2021
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Rank County Percentage of Pop. (%)
1 Potter County 31.46
2 Hanson County 31.35
3 Yankton County 29.79
4 Union County 26.69
5 Brule County 25.75
6 Davison County 25.19
7 Hand County 25.06
8 Miner County 24.95
9 Meade County 24.85
10 Harding County 24.68
11 Butte County 24.28
12 Clay County 24.04
13 Codington County 23.99
14 Hamlin County 23.96
15 Gregory County 23.95
16 Stanley County 23.90
17 Lincoln County 23.73
18 Turner County 23.14
19 Hughes County 22.96
20 Sully County 21.89
21 Spink County 21.19
22 Brown County 20.73
23 Pennington County 20.63
24 Brookings County 20.43
24 Lawrence County 20.43
25 Douglas County 19.98
26 Beadle County 19.94
27 Clark County 19.60
28 Deuel County 19.59
29 Tripp County 19.54
30 Bon Homme County 19.27
31 McCook County 19.12
32 Custer County 18.85
33 Walworth County 18.73
34 Hyde County 18.32
35 Edmunds County 18.30
36 Minnehaha County 17.77
37 McPherson County 17.55
38 Kingsbury County 17.23
39 Aurora County 16.38
40 Marshall County 16.24
41 Hutchinson County 15.80
42 Jones County 15.07
43 Moody County 14.52
44 Lake County 14.43
45 Grant County 14.21
46 Faulk County 13.91
47 Sanborn County 13.71
48 Perkins County 13.10
49 Fall River County 12.34
50 Charles Mix County 11.62
51 Day County 11.46
52 Jerauld County 10.49
53 Roberts County 10.45
54 Lyman County 9.40
55 Mellette County 9.34
56 Campbell County 8.85
57 Haakon County 8.78
58 Bennett County 6.92
59 Jackson County 6.00
60 Oglala Lakota County 5.77
61 Buffalo County 5.17
62 Dewey County 3.63
63 Corson County 2.90
64 Todd County 2.75
65 Ziebach County 1.01