Regional Price Parities: All Items: Metropolitan Portion for Montana was 91.18700 Index in January of 2022, according to the United States Federal Reserve. Historically, Regional Price Parities: All Items: Metropolitan Portion for Montana reached a record high of 97.06600 in January of 2011 and a record low of 91.18700 in January of 2022. Trading Economics provides the current actual value, an historical data chart and related indicators for Regional Price Parities: All Items: Metropolitan Portion for Montana - last updated from the United States Federal Reserve on April of 2024.