Post Offices List in Middletown City, New Jersey:
| Middletown Post Office | 1601 State Route 35, Middletown, NJ 07748 |
| New Monmouth Post Office | 33 Cherry Tree Farm Rd, Middletown, NJ 07748 |
| Middletown Post Office | 1601 State Route 35, Middletown, NJ 07748 |
| New Monmouth Post Office | 33 Cherry Tree Farm Rd, Middletown, NJ 07748 |