White to Non-White Racial Dissimilarity (5-year estimate) Index for Nassau County, FL was 29.12% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Nassau County, FL reached a record high of 31.85 in January of 2021 and a record low of 19.28 in January of 2009. 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 Nassau County, FL - last updated from the United States Federal Reserve on May of 2024.