White to Non-White Racial Dissimilarity (5-year estimate) Index for Blaine County, MT was 43.11% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Blaine County, MT reached a record high of 57.28 in January of 2009 and a record low of 22.91 in January of 2013. 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 Blaine County, MT - last updated from the United States Federal Reserve on May of 2024.