Post Offices List in Dunellen City, New Jersey:
| Dunellen Post Office | 311 North Ave, Dunellen, NJ 08812 |
| Green Brook Post Office | 1003 N Washington Ave, Dunellen, NJ 08812 |
| Dunellen Post Office | 311 North Ave, Dunellen, NJ 08812 |
| Green Brook Post Office | 1003 N Washington Ave, Dunellen, NJ 08812 |