Smithtown Post Office

Post office

25 Route 111, Smithtown, NY 11787

(631) 360-6709

Appts are required. Call 631-360-6709to schedule Mon-Fri 9A-4P and Sat 9A-12P. Last appt scheduled 15 min before closing.

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

Book at USPS Directions Facilities in Smithtown Facilities in New York

Smithtown Post Office accepts new U.S. passport applications in person in Smithtown, NY. First-time and child visits are booked on the USPS scheduler. Search ZIP 11787. How to apply · How to renew