Post Offices List in Marshall County, Illinois:
| Camp Grove Post Office | 1060 2nd St, Camp Grove, IL 61424 |
| Henry Post Office | 505 Main St, Henry, IL 61537 |
| La Rose Post Office | 111 S Main St, La Rose, IL 61541 |
| Lacon Post Office | 209 N Washington St, Lacon, IL 61540 |
| Toluca Post Office | 120 W Santa Fe Ave, Toluca, IL 61369 |
| Varna Post Office | 304 Walnut St, Varna, IL 61375 |
| Wenona Post Office | 212 N Chestnut St, Wenona, IL 61377 |