Post Offices in & near South Williamsport, Pennsylvania. Operating hours, locations, phone/fax number, services information.
South Williamsport Post Office in Williamsport, Pennsylvania on W Southern Ave. Operating hours, phone number, services information, and other locations.
Address: 1223 W Southern Ave, Williamsport, PA 17702
Phone: 570-323-7678
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
