White to Non-White Racial Dissimilarity (5-year estimate) Index for Hillsdale County, MI was 20.42% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Hillsdale County, MI reached a record high of 29.39 in January of 2009 and a record low of 17.25 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 Hillsdale County, MI - last updated from the United States Federal Reserve on May of 2024.