About ZIP code 20859
The ZIP code 20859 routes mail to Potomac 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
20859 - Potomac
ZIP code 20859 is Potomac in Maryland, United States.
| ZIP code | 20859 |
| Place | Potomac |
| Region | Maryland |
| District | Montgomery |
| Country | United States (US) |
| Coordinates | 39.144, -77.2076 (map) |