White to Non-White Racial Dissimilarity (5-year estimate) Index for Sussex County, DE was 40.67% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Sussex County, DE reached a record high of 41.81 in January of 2019 and a record low of 33.58 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 Sussex County, DE - last updated from the United States Federal Reserve on May of 2024.