Post office locations in 01860
| Post Office | Address | Phone | Hours |
| MERRIMAC | 79 E MAIN ST MERRIMAC, MA 01860 - 9998 | 978-346-7400 | Mon-Fri 9:00am - 12:30pm 1:30pm - 5:00pm Sat 9:00am - 12:00pm Sun Closed |
| Post Office | Address | Phone | Hours |
| MERRIMAC | 79 E MAIN ST MERRIMAC, MA 01860 - 9998 | 978-346-7400 | Mon-Fri 9:00am - 12:30pm 1:30pm - 5:00pm Sat 9:00am - 12:00pm Sun Closed |