Post Offices List in Montclair City, New Jersey:
| Memorial Post Office | 128 Watchung Ave Ste 2, Montclair, NJ 07043 |
| Montclair Post Office | 125 Glenridge Ave, Montclair, NJ 07042 |
| Upper Montclair Post Office | 572 Valley Rd Ste 2, Montclair, NJ 07043 |
| Memorial Post Office | 128 Watchung Ave Ste 2, Montclair, NJ 07043 |
| Montclair Post Office | 125 Glenridge Ave, Montclair, NJ 07042 |
| Upper Montclair Post Office | 572 Valley Rd Ste 2, Montclair, NJ 07043 |