White to Non-White Racial Dissimilarity (5-year estimate) Index for Ontario County, NY was 38.93% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Ontario County, NY reached a record high of 43.37 in January of 2016 and a record low of 37.41 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 Ontario County, NY - last updated from the United States Federal Reserve on May of 2024.