White to Non-White Racial Dissimilarity (5-year estimate) Index for Butte County, SD was 36.04% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Butte County, SD reached a record high of 36.04 in January of 2022 and a record low of 2.68 in January of 2013. 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 Butte County, SD - last updated from the United States Federal Reserve on May of 2024.