White to Non-White Racial Dissimilarity (5-year estimate) Index for Johnson County, IN was 29.10% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Johnson County, IN reached a record high of 40.15 in January of 2016 and a record low of 15.42 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 Johnson County, IN - last updated from the United States Federal Reserve on May of 2024.