Portsmouth Post Office
345 Heritage Ave Unit 100, Portsmouth, NH 03801
Retail Hours
| Sunday | Closed |
| Monday | 7:30 AM - 5:30 PM |
| Tuesday | 7:30 AM - 5:30 PM |
| Wednesday | 7:30 AM - 5:30 PM |
| Thursday | 7:30 AM - 5:30 PM |
| Friday | 7:30 AM - 5:30 PM |
| Saturday | 8:00 AM - 12:30 PM |
Contact Info
| Phone | 603-431-2871 |
| Fax | 603-430-8931 |
| TTY | 877-889-2457 |
| Toll Free | 1-800-275-8777 (1-800-Ask-USPS®) |
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