U S Government--postal Service, Offices Pen Argyl, PA 18072 Phone : (610) 863-6678 Business Category Government Offices-Federal Government Offices & Public Schools Post Office - Pen Argyl 7 S Robinson Ave Pen Argyl, PA 18072 Phone : (610) 863-6678 Business Category Post Offices Toll-Free           (800) ASK-USPS