Automated Postal Center - Mechanicsburg 702 E Simpson St Mechanicsburg, PA 17055 Phone : (717) 697-4641 Business Category Government Offices-Federal Automated Postal Centers Government Offices & Public Schools Toll-Free           (800) ASK-USPS Fax           (717) 795-7896 United States Government--veterans Employment And Training Services, Naval Reserve Recruiting Office, Palmyra, Mechanicsburg 702 E Simpson St Mechanicsburg, PA 17055 Phone : (717) 697-4641 Business Category Government Offices-Federal Employment Agencies National Security Recruiting Us Armed Forces Government Offices & Public Schools Post Office - Mechanicsburg 702 E Simpson St Mechanicsburg, PA 17055 Phone : (717) 697-4641 Business Category Post Offices Toll-Free           (800) ASK-USPS Fax           (717) 795-7896