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 9:00am - 5:00pm Sat 9:00am - 3:30pm Sun Closed |
| SETAUKET | 101 MAIN ST SETAUKET, NY 11733 - 9991 | 631-941-4042 | Mon-Fri 9:00am - 12:00pm 1:00pm - 4:00pm Sat 9:00am - 12:00pm Sun Closed |