Post Offices List in Baker County, Florida:
| Glen Saint Mary Post Office | 7345 W Mount Vernon St, Glen Saint Mary, FL 32040 |
| Macclenny Post Office | 39 W Lowder St, Macclenny, FL 32063 |
| Sanderson Post Office | 14470 Us Highway 90, Sanderson, FL 32087 |
| Glen Saint Mary Post Office | 7345 W Mount Vernon St, Glen Saint Mary, FL 32040 |
| Macclenny Post Office | 39 W Lowder St, Macclenny, FL 32063 |
| Sanderson Post Office | 14470 Us Highway 90, Sanderson, FL 32087 |