Most segregated, South Dakota counties

South Dakota counties ranked by the CensusEasy Segregation Score, the White vs non-White index of dissimilarity across census tracts (2024 ACS). Higher means residents are more sorted into separate neighborhoods. This list covers the 44 counties in South Dakota that qualify, ranked against each other statewide. The median across all 44 is 21. Biggest climber in the top 100 since 2020: Oglala Lakota County, SD, up 31 places to #7.