United States Government--post Offices, Joppa Joppa, IL 62953 Phone : (618) 543-7347 Business Category Government Offices-Federal Post Offices Government Offices & Public Schools Post Office - Joppa 205 Joppa Rd Joppa, IL 62953 Phone : (618) 543-7347 Post Office - Joppa Business Category Post Offices Toll-Free           (800) ASK-USPS