Post Offices List in Uniondale City, New York:
| Uniondale Post Office | 1000 Front St, Uniondale, NY 11553 |
| Rxr Plaza Post Office | 100 Rxr Plz, Uniondale, NY 11556 |
| Uniondale Post Office | 1000 Front St, Uniondale, NY 11553 |
| Rxr Plaza Post Office | 100 Rxr Plz, Uniondale, NY 11556 |