Post Offices in & near Defiance, Missouri. Operating hours, locations, phone/fax number, services information.
Post Office in Defiance, Missouri on S Highway 94. Operating hours, phone number, services information, and other locations.
Address: 2959 S Highway 94, Defiance, MO 63341
Phone: 636-987-2407
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457