Post office locations in 11733
| Post Office | Address | Phone | Hours |
| EAST SETAUKET | 450 ROUTE 25A EAST SETAUKET, NY 11733 - 2878 | 631-941-4005 | Mon-Fri 09:00 AM - 05:00 PM Sat 09:00 AM - 03:30 PM Sun Closed |
| SETAUKET | 101 MAIN ST SETAUKET, NY 11733 - 9991 | 631-941-4042 | Mon-Fri 09:00 AM - 12:00 PM 01:00 PM - 04:00 PM Sat 09:00 AM - 12:00 PM Sun Closed |