White to Non-White Racial Dissimilarity (5-year estimate) Index for Monroe County, IL was 37.04% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Monroe County, IL reached a record high of 40.70 in January of 2015 and a record low of 7.52 in January of 2009. 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 Monroe County, IL - last updated from the United States Federal Reserve on May of 2024.