Ranking of South Dakota Counties By Percentage of Population that are American Indian and Alaska Native Alone in 2018
Updated on June 18, 2025.
Based on the US Census Vintage data estimates, in 2018, among all South Dakota counties, Oglala Lakota County had the highest percentage of its population who identified their race as American Indian and Alaska Native Alone (92.93%), followed by Todd County (86.67%), and Buffalo County (80.97%).
The chart below shows the top 10 counties, and the table below shows the ranking of all South Dakota counties.
You can see similar ranking information for other racial and ethnicity groups in the United States.
You can also see similar information for other states, and also the ranking of all counties in the United States.
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Related Topics: South Dakota Census Vintage Data Topic List.
Data Source: US Census Bureau (Vintage).
See this for other years:
Ranking of South Dakota Counties By Percentage of Pop. that are
American Indian and Alaska Native Alone in 2018
Items per page:
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| Rank | County | % of County Population |
|---|---|---|
| 1 | Oglala Lakota County | 92.93 |
| 2 | Todd County | 86.67 |
| 3 | Buffalo County | 80.97 |
| 4 | Dewey County | 74.92 |
| 5 | Ziebach County | 70.68 |
| 6 | Corson County | 66.67 |
| 7 | Bennett County | 60.83 |
| 8 | Mellette County | 56.35 |
| 9 | Jackson County | 54.17 |
| 10 | Lyman County | 38.96 |
| 11 | Roberts County | 38.76 |
| 12 | Charles Mix County | 32.33 |
| 13 | Tripp County | 14.93 |
| 14 | Walworth County | 14.75 |
| 15 | Moody County | 13.74 |
| 16 | Hughes County | 11.98 |
| 17 | Pennington County | 10.2 |
| 18 | Marshall County | 9.99 |
| 19 | Brule County | 9.89 |
| 20 | Day County | 9.3 |
| 21 | Hyde County | 8.62 |
| 22 | Bon Homme County | 8.46 |
| 23 | Gregory County | 7.74 |
| 24 | Stanley County | 6.85 |
| 25 | Fall River County | 6.42 |
| 26 | Jones County | 4.33 |
| 27 | Clay County | 4.03 |
| 28 | Custer County | 3.87 |
| 29 | Brown County | 3.58 |
| 30 | Davison County | 3.31 |
| 31 | Yankton County | 3.27 |
| 32 | Sully County | 3.13 |
| 33 | Meade County | 2.95 |
| 34 | Minnehaha County | 2.86 |
| 34 | Potter County | 2.86 |
| 35 | Codington County | 2.84 |
| 36 | Aurora County | 2.78 |
| 37 | Haakon County | 2.75 |
| 38 | Spink County | 2.72 |
| 39 | Butte County | 2.58 |
| 40 | Douglas County | 2.47 |
| 41 | Perkins County | 2.42 |
| 42 | Lawrence County | 2.4 |
| 43 | Harding County | 2.24 |
| 44 | Beadle County | 1.62 |
| 45 | Hutchinson County | 1.54 |
| 46 | Grant County | 1.47 |
| 47 | Lake County | 1.41 |
| 48 | Edmunds County | 1.27 |
| 49 | Brookings County | 1.21 |
| 50 | McCook County | 1.17 |
| 50 | Turner County | 1.17 |
| 51 | Kingsbury County | 1.14 |
| 52 | Campbell County | 1.09 |
| 53 | Union County | 0.88 |
| 54 | Hamlin County | 0.83 |
| 55 | Jerauld County | 0.79 |
| 56 | Lincoln County | 0.75 |
| 57 | Deuel County | 0.74 |
| 58 | Miner County | 0.68 |
| 59 | Clark County | 0.67 |
| 60 | Hand County | 0.53 |
| 61 | Faulk County | 0.52 |
| 62 | Sanborn County | 0.46 |
| 63 | Hanson County | 0.39 |
| 64 | McPherson County | 0.25 |