White to Non-White Racial Dissimilarity (5-year estimate) Index for Middlesex County, VA was 25.07% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Middlesex County, VA reached a record high of 25.07 in January of 2022 and a record low of 15.06 in January of 2020. 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 Middlesex County, VA - last updated from the United States Federal Reserve on May of 2024.