White to Non-White Racial Dissimilarity (5-year estimate) Index for Austin County, TX was 27.77% in January of 2024, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Austin County, TX reached a record high of 27.77 in January of 2024 and a record low of 18.07 in January of 2023. 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 Austin County, TX - last updated from the United States Federal Reserve on April of 2026.