Zip Codes in Mason City, IA
| Zip Code | Post Office City | County | State | Show Map | Show Statistics |
|---|---|---|---|---|---|
| 50401 | Mason City | Cerro Gordo | Iowa | Show Map | Show Statistics |
| 50402 | Mason City | Cerro Gordo | Iowa | Show Map | Show Statistics |
| Zip Code | Post Office City | County | State | Show Map | Show Statistics |
|---|---|---|---|---|---|
| 50401 | Mason City | Cerro Gordo | Iowa | Show Map | Show Statistics |
| 50402 | Mason City | Cerro Gordo | Iowa | Show Map | Show Statistics |