Complete ZIP Code Details
| ZIP Code | 21810 |
| City | Allen |
| State | Maryland (MD) |
| County | Wicomico |
| Timezone | America/New_York |
| Coordinates | 38.2900500, -75.6888700 |
| Population | 55 |
| ZIP Type | STANDARD |
| Country | United States |
| ZIP Code | 21810 |
| City | Allen |
| State | Maryland (MD) |
| County | Wicomico |
| Timezone | America/New_York |
| Coordinates | 38.2900500, -75.6888700 |
| Population | 55 |
| ZIP Type | STANDARD |
| Country | United States |