St Peters Post Office

Post office

7055 Mexico Road, St Peters, MO 63376

Hours are not published. Call before you go.

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

Book at USPS Directions Facilities in St Peters Facilities in Missouri

St Peters Post Office accepts new U.S. passport applications in person in St Peters, MO. First-time and child visits are booked on the USPS scheduler. Search ZIP 63376. How to apply · How to renew