Post office locations in 01938
| Post Office | Address | Phone | Hours |
| IPSWICH | 27 MARKET ST IPSWICH, MA 01938 - 9998 | 978-356-2585 | Mon-Fri 08:30 AM - 05:00 PM Sat 08:30 AM - 12:30 PM Sun Closed |
| IPSWICH CARRIER ANNEX | 25 HAYWARD ST STE 5 IPSWICH, MA 01938 - 9991 | 978-356-7815 |