White to Non-White Racial Dissimilarity (5-year estimate) Index for Martin County, IN was 19.76% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Martin County, IN reached a record high of 55.31 in January of 2011 and a record low of 18.79 in January of 2020. 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 Martin County, IN - last updated from the United States Federal Reserve on May of 2024.