Housing Inventory: Average Listing Price Year-Over-Year in Barnstable County, MA was -0.70% in July of 2025, according to the United States Federal Reserve. Historically, Housing Inventory: Average Listing Price Year-Over-Year in Barnstable County, MA reached a record high of 40.63 in March of 2021 and a record low of -10.36 in March of 2025. Trading Economics provides the current actual value, an historical data chart and related indicators for Housing Inventory: Average Listing Price Year-Over-Year in Barnstable County, MA - last updated from the United States Federal Reserve on September of 2025.