White to Non-White Racial Dissimilarity (5-year estimate) Index for Perry County, IL was 31.09% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Perry County, IL reached a record high of 52.06 in January of 2010 and a record low of 31.09 in January of 2022. 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 Perry County, IL - last updated from the United States Federal Reserve on May of 2024.