Monmouth, IL
ZIP Codes in Monmouth, Illinois
January 19, 2026
| ZIP Code | Population | Coordinates |
|---|---|---|
| 61462 | 10,855 | 40.9099, -90.6517 |
Monmouth has 1 ZIP code
ZIP Codes in Monmouth, Illinois
January 19, 2026
| ZIP Code | Population | Coordinates |
|---|---|---|
| 61462 | 10,855 | 40.9099, -90.6517 |