White to Non-White Racial Dissimilarity (5-year estimate) Index for Montgomery County, PA was 32.93% 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, PA reached a record high of 35.62 in January of 2009 and a record low of 32.17 in January of 2021. 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, PA - last updated from the United States Federal Reserve on May of 2024.