Post Offices List in Oak Ridge City, New Jersey:
| Jefferson Post Office | 5716 Berkshire Valley Rd Ste 5, Oak Ridge, NJ 07438 |
| Oak Ridge Post Office | 247 Oak Ridge Rd, Oak Ridge, NJ 07438 |
| Jefferson Post Office | 5716 Berkshire Valley Rd Ste 5, Oak Ridge, NJ 07438 |
| Oak Ridge Post Office | 247 Oak Ridge Rd, Oak Ridge, NJ 07438 |