White to Non-White Racial Dissimilarity (5-year estimate) Index for Fairfield County, CT was 52.07% in January of 2021, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Fairfield County, CT reached a record high of 57.15 in January of 2011 and a record low of 52.07 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 Fairfield County, CT - last updated from the United States Federal Reserve on May of 2024.