Housing Inventory: Average Listing Price in Grundy County, IL was 376155.00000 U.S. $ in February of 2026, according to the United States Federal Reserve. Historically, Housing Inventory: Average Listing Price in Grundy County, IL reached a record high of 483121.00000 in May of 2024 and a record low of 231351.00000 in September of 2016. Trading Economics provides the current actual value, an historical data chart and related indicators for Housing Inventory: Average Listing Price in Grundy County, IL - last updated from the United States Federal Reserve on April of 2026.