Post Offices in & near Island Grove, Illinois. Operating hours, locations, phone/fax number, services information.
Post Office in Dieterich, Illinois on S Main St. Operating hours, phone number, services information, and other locations.
Address: 201 S Main St, Dieterich, IL 62424
Phone: 217-925-5535
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457