About ZIP code 21555
The ZIP code 21555 routes mail to Oldtown in the Maryland region of United States. Use it as the postal segment of any address in this area, and confirm unusual addresses with the local postal operator.
United States ยท ZIP code
21555 - Oldtown
ZIP code 21555 is Oldtown in Maryland, United States.
| ZIP code | 21555 |
| Place | Oldtown |
| Region | Maryland |
| District | Allegany |
| Country | United States (US) |
| Coordinates | 39.5846, -78.6044 (map) |