Post Offices in & near Sherman, Kansas. Operating hours, locations, phone/fax number, services information.
Post Office in Oswego, Kansas on 4th St. Operating hours, phone number, services information, and other locations.
Address: 819 4th St, Oswego, KS 67356
Phone: 620-795-4532
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457