Affton Post Office

Post office

55 Grasso Plaza, St Louis, MO 63123

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 Louis Facilities in Missouri

Affton Post Office accepts new U.S. passport applications in person in St Louis, MO. First-time and child visits are booked on the USPS scheduler. Search ZIP 63123. How to apply · How to renew

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