Automated Postal Center - Joplin Sta A 3115 S Main St Joplin, MO 64804 Phone : (417) 623-4488 Business Category Automated Postal Centers Toll-Free           (800) ASK-USPS Post Office - Joplin Sta A 3115 S Main St Joplin, MO 64804 Phone : (417) 623-4488 Business Category Post Offices Toll-Free           (800) ASK-USPS