White to Non-White Racial Dissimilarity (5-year estimate) Index for Rockland County, NY was 46.13% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Rockland County, NY reached a record high of 46.13 in January of 2022 and a record low of 43.48 in January of 2016. 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 Rockland County, NY - last updated from the United States Federal Reserve on May of 2024.