Post office locations in 02139
| Post Office | Address | Phone | Hours |
| CAMBRIDGE | 770 MASSACHUSETTS AVE CAMBRIDGE, MA 02139 - 9998 | 617-575-8700 | Mon-Fri 07:30 AM - 07:00 PM Sat 07:30 AM - 02:00 PM Sun Closed |
| INMAN SQUARE | 1311 CAMBRIDGE ST CAMBRIDGE, MA 02139 - 9991 | 617-864-4344 | Mon-Fri 10:00 AM - 05:00 PM Sat-Sun Closed |