Complete ZIP Code Details
| ZIP Code | 21648 |
| City | Madison |
| State | Maryland (MD) |
| County | Dorchester |
| Timezone | America/New_York |
| Coordinates | 38.4966000, -76.2338600 |
| Population | 172 |
| ZIP Type | STANDARD |
| Country | United States |
| ZIP Code | 21648 |
| City | Madison |
| State | Maryland (MD) |
| County | Dorchester |
| Timezone | America/New_York |
| Coordinates | 38.4966000, -76.2338600 |
| Population | 172 |
| ZIP Type | STANDARD |
| Country | United States |