White to Non-White Racial Dissimilarity (5-year estimate) Index for Decatur County, KS was 20.01% in January of 2019, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Decatur County, KS reached a record high of 40.57 in January of 2009 and a record low of 20.01 in January of 2019. 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 Decatur County, KS - last updated from the United States Federal Reserve on May of 2024.