White to Non-White Racial Dissimilarity (5-year estimate) Index for Musselshell County, MT was 15.22% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Musselshell County, MT reached a record high of 48.03 in January of 2010 and a record low of 7.38 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 Musselshell County, MT - last updated from the United States Federal Reserve on May of 2024.