White to Non-White Racial Dissimilarity (5-year estimate) Index for Houston County, TN was 19.97% in January of 2023, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Houston County, TN reached a record high of 38.87 in January of 2009 and a record low of 15.64 in January of 2015. 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 Houston County, TN - last updated from the United States Federal Reserve on September of 2025.