Monticello, IL
ZIP Codes in Monticello, Illinois
January 19, 2026
| ZIP Code | Population | Coordinates |
|---|---|---|
| 61856 | 8,315 | 40.0293, -88.5837 |
Monticello has 1 ZIP code
ZIP Codes in Monticello, Illinois
January 19, 2026
| ZIP Code | Population | Coordinates |
|---|---|---|
| 61856 | 8,315 | 40.0293, -88.5837 |