White to Non-White Racial Dissimilarity (5-year estimate) Index for Missoula County, MT was 22.18% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Missoula County, MT reached a record high of 27.48 in January of 2013 and a record low of 15.26 in January of 2019. 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 Missoula County, MT - last updated from the United States Federal Reserve on May of 2024.