Gaithersburg zipcode
| City | Gaithersburg |
| ZIP Code | 20877 |
| Type | Standard |
| State Code | MD |
| State | Maryland |
ZIP code of Gaithersburg is 20877. This place is located in Maryland state in US. To send any postal service to Gaithersburg, you must use 20877 zipcode.
The ZIP code 20877 is also used with 2 more city names of Maryland.
- Montgomery Village, MD
- Montgomry Vlg, MD