About ZIP code 21810
The ZIP code 21810 routes mail to Allen 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
21810 - Allen
ZIP code 21810 is Allen in Maryland, United States.
| ZIP code | 21810 |
| Place | Allen |
| Region | Maryland |
| District | Wicomico |
| Country | United States (US) |
| Coordinates | 38.2873, -75.688 (map) |