White to Non-White Racial Dissimilarity (5-year estimate) Index for Washington County, TN was 30.88% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Washington County, TN reached a record high of 41.05 in January of 2010 and a record low of 30.88 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 Washington County, TN - last updated from the United States Federal Reserve on May of 2024.