White to Non-White Racial Dissimilarity (5-year estimate) Index for Montgomery County, TX was 31.80% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Montgomery County, TX reached a record high of 31.80 in January of 2022 and a record low of 24.41 in January of 2013. 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 Montgomery County, TX - last updated from the United States Federal Reserve on May of 2024.