Monmouth zipcode
| City | Monmouth |
| ZIP Code | 61462 |
| Type | Standard |
| State Code | IL |
| State | Illinois |
ZIP code of Monmouth is 61462. This place is located in Illinois state in US. To send any postal service to Monmouth, you must use 61462 zipcode.
You should avoid following 2 city names of Illinois to be used with the ZIP code 61462.
- Larchland, IL
- Ormonde, IL