Post Offices List in Wyandanch City, New York:
| Wyandanch Post Office | 1569 Straight Path, Wyandanch, NY 11798 |
| Wheatley Heights Post Office | 6 Colonial Springs Rd, Wyandanch, NY 11798 |
| Wyandanch Post Office | 1569 Straight Path, Wyandanch, NY 11798 |
| Wheatley Heights Post Office | 6 Colonial Springs Rd, Wyandanch, NY 11798 |