Union Bridge zipcode
| City | Union Bridge |
| ZIP Code | 21791 |
| Type | Standard |
| State Code | MD |
| State | Maryland |
ZIP code of Union Bridge is 21791. This place is located in Maryland state in US. To send any postal service to Union Bridge, you must use 21791 zipcode.
The ZIP code 21791 is also used with 1 more city name of Maryland.
- Linwood, MD