Post Offices List in Menard County, Illinois:
| Athens Post Office | 215 N Main St, Athens, IL 62613 |
| Greenview Post Office | 158 W Washington St, Greenview, IL 62642 |
| Oakford Post Office | 105 S Whitley St, Oakford, IL 62673 |
| Petersburg Post Office | 220 S 7th St, Petersburg, IL 62675 |