White to Non-White Racial Dissimilarity (5-year estimate) Index for Montgomery County, MO was 27.58% 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, MO reached a record high of 27.58 in January of 2022 and a record low of 5.23 in January of 2010. 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, MO - last updated from the United States Federal Reserve on May of 2024.