Post Offices List in Marshall County, Indiana:
| Argos Post Office | 140 W Walnut St, Argos, IN 46501 |
| Bourbon Post Office | 221 N Main St, Bourbon, IN 46504 |
| Bremen Post Office | 201 N Center St, Bremen, IN 46506 |
| Culver Post Office | 115 W Jefferson St, Culver, IN 46511 |
| Lapaz Post Office | 105 Courtland St, Lapaz, IN 46537 |
| Plymouth Post Office | 124 W Garro St, Plymouth, IN 46563 |
| Tippecanoe Post Office | 18436 State Road 331, Tippecanoe, IN 46570 |