Post Offices List in Martin County, Minnesota:
| Ceylon Post Office | 111 W Main St, Ceylon, MN 56121 |
| Dunnell Post Office | 150 W Wenberg St, Dunnell, MN 56127 |
| Fairmont Post Office | 490 S State St, Fairmont, MN 56031 |
| Granada Post Office | 109 S Main St, Granada, MN 56039 |
| Ormsby Post Office | 506 Main St, Ormsby, MN 56162 |
| Sherburn Post Office | 127 N Main St, Sherburn, MN 56171 |
| Trimont Post Office | 11 Main St E, Trimont, MN 56176 |
| Truman Post Office | 310 W Ciro St, Truman, MN 56088 |
| Welcome Post Office | 113 Dugan St N, Welcome, MN 56181 |