Post Offices List in East Setauket City, New York:
| East Setauket Post Office | 450 Route 25a, East Setauket, NY 11733 |
| Setauket Post Office | 101 Main St, East Setauket, NY 11733 |
| East Setauket Post Office | 450 Route 25a, East Setauket, NY 11733 |
| Setauket Post Office | 101 Main St, East Setauket, NY 11733 |