Post Offices List in Cerro Gordo County, Iowa:
| Clear Lake Post Office | 410 1st Ave N, Clear Lake, IA 50428 |
| Mason City Post Office | 211 N Delaware Ave Ste 100, Mason City, IA 50401 |
| Meservey Post Office | 424 1st St, Meservey, IA 50457 |
| Plymouth Post Office | 502 Main St, Plymouth, IA 50464 |
| Rockwell Post Office | 313 Main St E, Rockwell, IA 50469 |
| Swaledale Post Office | 202 5th St S, Swaledale, IA 50477 |
| Thornton Post Office | 313 Main St, Thornton, IA 50479 |
| Ventura Post Office | 101 N Weimer St, Ventura, IA 50482 |