Oakland zipcode
| City | Oakland |
| ZIP Code | 21550 |
| Type | Standard |
| State Code | MD |
| State | Maryland |
ZIP code of Oakland is 21550. This place is located in Maryland state in US. To send any postal service to Oakland, you must use 21550 zipcode.
The ZIP code 21550 is also used with 9 more city names of Maryland.
- Crellin, MD
- Deer Park, MD
- Hutton, MD
- Loch Lyn Hght, MD
- Loch Lynn Heights, MD
- Mnt Lake Park, MD
- Mountain Lake Park, MD
- Mt Lake Park, MD
- Mtn Lk Park, MD