62664 Zip Code
| City: | Mason City |
| State: | IL |
| County: | Mason County |
| Area Codes: | 217, 309 |
| Latitude: | 40.2 |
| Longitude: | -89.69 |
| Time Zone: | America/Chicago |
| Population in 2010: | 3,042 |
| School District: | Illini Central Community Unit School District 189 |
| District Code: | 113 |