White to Non-White Racial Dissimilarity (5-year estimate) Index for Iosco County, MI was 26.03% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Iosco County, MI reached a record high of 39.16 in January of 2019 and a record low of 23.05 in January of 2014. 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 Iosco County, MI - last updated from the United States Federal Reserve on May of 2024.