Mason City, IL
ZIP Codes in Mason City, Illinois
January 19, 2026
| ZIP Code | Population | Coordinates |
|---|---|---|
| 62664 | 2,945 | 40.2126, -89.7241 |
Mason City has 1 ZIP code
ZIP Codes in Mason City, Illinois
January 19, 2026
| ZIP Code | Population | Coordinates |
|---|---|---|
| 62664 | 2,945 | 40.2126, -89.7241 |