About ZIP code 20620
The ZIP code 20620 routes mail to Callaway 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
20620 - Callaway
ZIP code 20620 is Callaway in Maryland, United States.
| ZIP code | 20620 |
| Place | Callaway |
| Region | Maryland |
| District | St. Mary's |
| Country | United States (US) |
| Coordinates | 38.2275, -76.521 (map) |