White to Non-White Racial Dissimilarity (5-year estimate) Index for New London County, CT was 43.34% in January of 2021, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for New London County, CT reached a record high of 46.50 in January of 2009 and a record low of 40.70 in January of 2013. 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 New London County, CT - last updated from the United States Federal Reserve on May of 2024.