Post Offices List in Oakland City, Maryland:
| Oakland Post Office | 22 S 2nd St, Oakland, MD 21550 |
| Mountain Lake Park Post Office | 1325 Maryland Hwy, Oakland, MD 21550 |
| Oakland Post Office | 22 S 2nd St, Oakland, MD 21550 |
| Mountain Lake Park Post Office | 1325 Maryland Hwy, Oakland, MD 21550 |