White to Non-White Racial Dissimilarity (5-year estimate) Index for Whiteside County, IL was 44.90% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Whiteside County, IL reached a record high of 45.89 in January of 2021 and a record low of 35.51 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 Whiteside County, IL - last updated from the United States Federal Reserve on May of 2024.