Upper Marlboro zipcode
| City | Upper Marlboro |
| ZIP Code | 20792 |
| Type | PO Box |
| State Code | MD |
| State | Maryland |
ZIP code of Upper Marlboro is 20792. This place is located in Maryland state in US. To send any postal service to Upper Marlboro, you must use 20792 zipcode.
The ZIP code 20792 is also used with 2 more city names of Maryland.
- Largo, MD
- Uppr Marlboro, MD