De Kalb County, IL - Housing Inventory: Median Listing Price Year-Over-Year in DeKalb County, IL was 11.55% in February of 2026, according to the United States Federal Reserve. Historically, De Kalb County, IL - Housing Inventory: Median Listing Price Year-Over-Year in DeKalb County, IL reached a record high of 50.84 in February of 2022 and a record low of -11.63 in July of 2021. Trading Economics provides the current actual value, an historical data chart and related indicators for De Kalb County, IL - Housing Inventory: Median Listing Price Year-Over-Year in DeKalb County, IL - last updated from the United States Federal Reserve on April of 2026.