DeKalb County Tax Information DeKalb County will host its annual Delinquent Property Tax Sale Auction on October 27, 2025, in-person at the DeKalb County Administration Building, 110 E. Sycamore St., Sycamore, IL. The auction begins at 9:00 A.M. CST. Key Auction Details Date: October 27, 2025 Location: DeKalb County Administration Building Time: 9:00 A.M. CST […]