White to Non-White Racial Dissimilarity (5-year estimate) Index for Highland County, OH was 35.36% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Highland County, OH reached a record high of 49.32 in January of 2009 and a record low of 34.23 in January of 2019. 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 Highland County, OH - last updated from the United States Federal Reserve on May of 2024.