Post Offices in & near Karnak, Illinois. Operating hours, locations, phone/fax number, services information.
Post Office in Karnak, Illinois on N 1st St. Operating hours, phone number, services information, and other locations.
Address: 210 N 1st St, Karnak, IL 62956
Phone: 618-634-9355
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
