About ZIP code 21738
The ZIP code 21738 routes mail to Glenwood 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
21738 - Glenwood
ZIP code 21738 is Glenwood in Maryland, United States.
| ZIP code | 21738 |
| Place | Glenwood |
| Region | Maryland |
| District | Howard |
| Country | United States (US) |
| Coordinates | 39.2795, -77.0148 (map) |