Upper Marlboro zipcode
| City | Upper Marlboro |
| ZIP Code | 20773 |
| Type | PO Box |
| State Code | MD |
| State | Maryland |
ZIP code of Upper Marlboro is 20773. This place is located in Maryland state in US. To send any postal service to Upper Marlboro, you must use 20773 zipcode.
The ZIP code 20773 is also used with 1 more city name of Maryland.
- Uppr Marlboro, MD