ZIP Code 50402 is located in Mason City Iowa. 50402 is entirely within Cerro Gordo County. Regionally, 50402 is located in the Rochester-Mason City-Austin Area.
| ZIP Code Name | Mason City |
| Primary County | Cerro Gordo County |
| ZIP Code Type | PO Box |
| Current Time | CDT |
| Coordinates | 43.15419006,-93.19944000 |
| Adjacent ZIP Codes | |
| Region | Rochester-Mason City-Austin Area |
| Metropolitan/Micropolitan Stat Area | Mason City, IA |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |