White to Non-White Racial Dissimilarity (5-year estimate) Index for Park County, MT was 13.58% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Park County, MT reached a record high of 35.16 in January of 2014 and a record low of 12.53 in January of 2011. 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 Park County, MT - last updated from the United States Federal Reserve on May of 2024.