Post office locations in 01561
| Post Office | Address | Phone | Hours |
| SOUTH LANCASTER | 93 SAWYER ST SOUTH LANCASTER, MA 01561 - 9800 | 978-365-4631 | Mon-Fri 08:30 AM - 01:30 PM 02:30 PM - 05:00 PM Sat 09:00 AM - 12:00 PM Sun Closed |
| Post Office | Address | Phone | Hours |
| SOUTH LANCASTER | 93 SAWYER ST SOUTH LANCASTER, MA 01561 - 9800 | 978-365-4631 | Mon-Fri 08:30 AM - 01:30 PM 02:30 PM - 05:00 PM Sat 09:00 AM - 12:00 PM Sun Closed |