About ZIP code 20899
The ZIP code 20899 routes mail to Gaithersburg 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
20899 - Gaithersburg
ZIP code 20899 is Gaithersburg in Maryland, United States.
| ZIP code | 20899 |
| Place | Gaithersburg |
| Region | Maryland |
| District | Montgomery |
| Country | United States (US) |
| Coordinates | 39.1403, -77.222 (map) |