East Islip Post Office

Post office

11 Greenwood Avenue, East Islip, NY 11730

(631) 581-4801

Appointments are required. Call 631-581-4801 to schedule Mon-Fri 10A-3P

Appointment required

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

Book at USPS Directions Facilities in East Islip Facilities in New York

East Islip Post Office accepts new U.S. passport applications in person in East Islip, NY. First-time and child visits are booked on the USPS scheduler. Search ZIP 11730. How to apply · How to renew