Post office locations in 12456
| Post Office | Address | Phone | Hours |
| MOUNT MARION | 542 GLASCO TPKE MOUNT MARION, NY 12456 - 9998 | 845-246-9661 | Mon-Fri 10:00am - 1:00pm 2:00pm - 5:00pm Sat 9:00am - 11:30am Sun Closed |
| Post Office | Address | Phone | Hours |
| MOUNT MARION | 542 GLASCO TPKE MOUNT MARION, NY 12456 - 9998 | 845-246-9661 | Mon-Fri 10:00am - 1:00pm 2:00pm - 5:00pm Sat 9:00am - 11:30am Sun Closed |