Monmouth zipcode
| City | Monmouth |
| ZIP Code | 52309 |
| Type | Standard |
| State Code | IA |
| State | Iowa |
ZIP code of Monmouth is 52309. This place is located in Iowa state in US. To send any postal service to Monmouth, you must use 52309 zipcode.
You should avoid following 1 city name of Iowa to be used with the ZIP code 52309.
- Canton, IA