Post office locations in 03801
| Post Office | Address | Phone | Hours |
| PORTSMOUTH | 345 HERITAGE AVE UNIT 100 PORTSMOUTH, NH 03801 - 9995 | 603-431-2871 | Mon-Fri 7:30am - 5:30pm Sat 8:00am - 12:30pm Sun Closed |
| PORTSMOUTH CARRIER ANNEX | 345 HERITAGE AVE UNIT 100 PORTSMOUTH, NH 03801 - 9995 | 603-427-6270 |