Union Post Office

Post office

804 Industrial Park Rd, Union, SC 29379

(864) 427-7638

Appointments are required (864)427-7638

Appointment required

Hours and addresses come from the State Department listing, updated November 2, 2026.

Book at USPS Directions Facilities in Union Facilities in South Carolina

Union Post Office accepts new U.S. passport applications in person in Union, SC. First-time and child visits are booked on the USPS scheduler. Search ZIP 29379. How to apply · How to renew