All-Transactions House Price Index for Gallatin County, MT was 418.20000 Index 2000=100 in January of 2023, according to the United States Federal Reserve. Historically, All-Transactions House Price Index for Gallatin County, MT reached a record high of 418.20000 in January of 2023 and a record low of 43.96000 in January of 1987. Trading Economics provides the current actual value, an historical data chart and related indicators for All-Transactions House Price Index for Gallatin County, MT - last updated from the United States Federal Reserve on May of 2024.