White to Non-White Racial Dissimilarity (5-year estimate) Index for Delta County, TX was 2.27% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Delta County, TX reached a record high of 39.10 in January of 2016 and a record low of 2.27 in January of 2022. 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 Delta County, TX - last updated from the United States Federal Reserve on May of 2024.