White to Non-White Racial Dissimilarity (5-year estimate) Index for Corson County, SD was 24.96% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Corson County, SD reached a record high of 61.83 in January of 2018 and a record low of 11.15 in January of 2021. Trading Economics provides the current actual value, an historical data chart and related indicators for White to Non-White Racial Dissimilarity (5-year estimate) Index for Corson County, SD - last updated from the United States Federal Reserve on May of 2024.