New Castle Post Office General Mail Facility

Post office

435 South Cascade Street, New Castle, PA 16108

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 New Castle Facilities in Pennsylvania

New Castle Post Office General Mail Facility accepts new U.S. passport applications in person in New Castle, PA. First-time and child visits are booked on the USPS scheduler. Search ZIP 16108. How to apply · How to renew

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