Ranking of South Dakota Counties By Percentage of Voting-age Population that were American Indian and Alaska Native Alone from Census 2020

According to the data from the United States 2020 decennial Census, as at April 2020, among all South Dakota counties, Oglala Lakota County had the highest percentage of its voting-age population that identified their race as American Indian and Alaska Native Alone (92.44%), followed by Todd County (86.48%), and Buffalo County (78.85%).

The chart below shows the top 10 counties, and the table below shows the ranking of all South Dakota counties based on the percentage of the voting-age population that identified as American Indian and Alaska Native Alone.

You can see similar ranking information for other states. You can also see similar rankings of counties for other racial groups in South Dakota.