Post Office - East Waterford 1 Main St East Waterford, PA 17021 Phone : (717) 734-3585 Business Category Post Offices Toll-Free           (800) ASK-USPS United States Government--postal Service, East Waterford Ofc S Main St East Waterford, PA 17021 Phone : (717) 734-3585 Business Category Government Offices-Federal Government Offices & Public Schools