Post Offices List in Clifton City, New Jersey:
| Allwood Post Office | 495 Allwood Rd, Clifton, NJ 07012 |
| Clifton Post Office | 811 Paulison Ave, Clifton, NJ 07011 |
| Delawanna Post Office | 266 Main Ave, Clifton, NJ 07014 |
| Main Avenue Post Office | 1114 Main Ave, Clifton, NJ 07011 |