| Business | Phone |
| Us Post Office 123 Galen St, Watertown 2472 | (617) 926-2606 |
| Us Post Office 126 Main St, Watertown 2472 | (617) 000-1111 |
| Us Post Office 589 Mount Auburn St, Watertown 2472 | (617) 000-1111 |
| Us Post Office 705 Mount Auburn St, Watertown 2472 | (617) 000-1111 |