White to Non-White Racial Dissimilarity (5-year estimate) Index for Windham County, CT was 48.79% in January of 2021, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Windham County, CT reached a record high of 58.24 in January of 2017 and a record low of 48.79 in January of 2021. 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 Windham County, CT - last updated from the United States Federal Reserve on May of 2024.