White to Non-White Racial Dissimilarity (5-year estimate) Index for Roanoke County, VA was 24.19% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Roanoke County, VA reached a record high of 27.48 in January of 2021 and a record low of 18.44 in January of 2017. 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 Roanoke County, VA - last updated from the United States Federal Reserve on May of 2024.