White to Non-White Racial Dissimilarity (5-year estimate) Index for Gillespie County, TX was 17.39% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Gillespie County, TX reached a record high of 25.77 in January of 2021 and a record low of 9.53 in January of 2018. 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 Gillespie County, TX - last updated from the United States Federal Reserve on June of 2024.