White to Non-White Racial Dissimilarity (5-year estimate) Index for Midland County, TX was 34.29% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Midland County, TX reached a record high of 40.84 in January of 2015 and a record low of 34.29 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 Midland County, TX - last updated from the United States Federal Reserve on May of 2024.