White to Non-White Racial Dissimilarity (5-year estimate) Index for Madison County, NC was 28.45% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Madison County, NC reached a record high of 48.01 in January of 2009 and a record low of 13.23 in January of 2011. 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 Madison County, NC - last updated from the United States Federal Reserve on May of 2024.