White to Non-White Racial Dissimilarity (5-year estimate) Index for Sumner County, TN was 30.82% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Sumner County, TN reached a record high of 38.90 in January of 2016 and a record low of 30.82 in January of 2022. 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 Sumner County, TN - last updated from the United States Federal Reserve on May of 2024.