White to Non-White Racial Dissimilarity (5-year estimate) Index for Carroll County, IL was 33.30% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Carroll County, IL reached a record high of 38.19 in January of 2015 and a record low of 10.25 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 Carroll County, IL - last updated from the United States Federal Reserve on May of 2024.