Housing Inventory: Median Listing Price per Square Feet Year-Over-Year in St. Louis County, MO was -4.81% in July of 2025, according to the United States Federal Reserve. Historically, Housing Inventory: Median Listing Price per Square Feet Year-Over-Year in St. Louis County, MO reached a record high of 15.93 in September of 2024 and a record low of -9.86 in April of 2020. Trading Economics provides the current actual value, an historical data chart and related indicators for Housing Inventory: Median Listing Price per Square Feet Year-Over-Year in St. Louis County, MO - last updated from the United States Federal Reserve on September of 2025.