White to Non-White Racial Dissimilarity (5-year estimate) Index for Somerset County, ME was 31.56% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Somerset County, ME reached a record high of 42.57 in January of 2010 and a record low of 23.14 in January of 2014. 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 Somerset County, ME - last updated from the United States Federal Reserve on May of 2024.