About ZIP code 21641
The ZIP code 21641 routes mail to Hillsboro 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
21641 - Hillsboro
ZIP code 21641 is Hillsboro in Maryland, United States.
| ZIP code | 21641 |
| Place | Hillsboro |
| Region | Maryland |
| District | Caroline |
| Country | United States (US) |
| Coordinates | 38.9206, -75.9388 (map) |