Ranking of South Dakota Counties By Number of People and Percentage of Population With No Health Insurance Coverage in 2021 (ACS-5Yrs)

Updated on October 27, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, the percentage of the South Dakota population without a health insurance coverage was 9.59% (i.e. 82,946 people). Percentagewise, among all South Dakota counties, Oglala Lakota County had the highest percentage of its population with no health insurance coverage (41.91%), followed by Buffalo County (41.59%), and Mellette County (38.10%).

In numerical terms, Minnehaha County had the highest number of people without a health insurance coverage (15,723), followed by Pennington County (11,961), and Oglala Lakota County (5,793).

The charts below shows the top 10 counties by the number of people and percentage of the population without a health insurance coverage. The tables below shows the ranking for all South Dakota counties.

You can see similar information for other types of health insurance coverages.

You can also see similar information for other states.

Ranking of South Dakota Counties By Percentage of Population With No Health Insurance Coverage in 2021
Oglala Lakota County
Buffalo County
Mellette County
Ziebach County
Todd County
Jackson County
Dewey County
Corson County
Bennett County
Roberts County
Ranking of South Dakota Counties By Number of People With No Health Insurance Coverage in 2021
Minnehaha County
Pennington County
Oglala Lakota County
Meade County
Brown County
Lawrence County
Lincoln County
Todd County
Roberts County
Codington County
Ranking of South Dakota Counties By Percentage of Population With No Health Insurance Coverage in 2021
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Rank County Percentage of Population (%)
1 Oglala Lakota County 41.91
2 Buffalo County 41.59
3 Mellette County 38.10
4 Ziebach County 30.94
5 Todd County 27.50
6 Jackson County 26.92
7 Dewey County 24.20
8 Corson County 23.83
9 Bennett County 22.89
10 Roberts County 21.08
11 Lyman County 19.92
12 Charles Mix County 17.88
13 Douglas County 15.44
14 Butte County 13.73
15 Haakon County 13.04
16 Fall River County 11.59
17 Meade County 11.45
18 Pennington County 11.28
19 Walworth County 10.72
20 Lawrence County 10.58
21 Custer County 10.47
22 Grant County 10.11
23 Hamlin County 9.95
24 Tripp County 9.88
25 Day County 9.21
26 Perkins County 9.12
27 Sanborn County 8.88
28 Jones County 8.84
29 Aurora County 8.81
30 Brule County 8.71
31 Minnehaha County 8.19
32 Spink County 7.86
33 McCook County 7.85
34 Potter County 7.82
35 Yankton County 7.70
36 Gregory County 7.67
37 Deuel County 7.65
38 Davison County 7.60
39 Brown County 7.54
40 McPherson County 7.51
41 Moody County 7.41
42 Bon Homme County 7.33
43 Harding County 7.18
44 Miner County 7.10
45 Hughes County 7.05
46 Clark County 6.96
47 Marshall County 6.80
48 Codington County 6.79
49 Turner County 6.78
50 Stanley County 6.41
51 Clay County 6.40
52 Union County 6.04
53 Kingsbury County 5.38
54 Edmunds County 5.30
55 Brookings County 5.24
55 Jerauld County 5.24
55 Sully County 5.24
56 Hanson County 5.03
57 Beadle County 4.87
58 Hutchinson County 4.39
59 Lake County 4.18
60 Hyde County 4.16
61 Lincoln County 4.09
62 Faulk County 3.90
63 Campbell County 3.81
64 Hand County 2.95
Ranking of South Dakota Counties By Number of People With NO Health Insurance Coverage in 2021
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Rank County Number of People
1 Minnehaha County 15723
2 Pennington County 11961
3 Oglala Lakota County 5793
4 Meade County 3232
5 Brown County 2863
6 Lawrence County 2691
7 Lincoln County 2574
8 Todd County 2562
9 Roberts County 2124
10 Codington County 1898
11 Brookings County 1788
12 Yankton County 1692
13 Charles Mix County 1625
14 Davison County 1492
15 Butte County 1384
16 Dewey County 1282
17 Hughes County 1192
18 Union County 984
19 Corson County 945
20 Clay County 935
21 Beadle County 909
22 Custer County 860
23 Buffalo County 821
24 Fall River County 788
25 Bennett County 773
26 Ziebach County 767
27 Jackson County 761
28 Grant County 758
29 Lyman County 742
30 Mellette County 716
31 Hamlin County 593
32 Turner County 574
33 Walworth County 563
34 Tripp County 544
35 Day County 496
36 Spink County 495
37 Lake County 467
38 Moody County 465
39 Brule County 444
40 McCook County 435
41 Douglas County 425
42 Bon Homme County 405
43 Deuel County 324
44 Hutchinson County 318
45 Gregory County 303
46 Marshall County 294
47 Kingsbury County 272
48 Perkins County 268
49 Clark County 260
50 Haakon County 239
51 Aurora County 222
52 Edmunds County 208
53 Sanborn County 206
54 Potter County 199
55 Stanley County 189
56 Hanson County 172
57 McPherson County 162
58 Miner County 160
59 Jerauld County 93
60 Hand County 89
61 Faulk County 82
61 Harding County 82
62 Jones County 81
63 Sully County 67
64 Campbell County 59
65 Hyde County 56