Post office locations in 03854
| Post Office | Address | Phone | Hours |
| NEW CASTLE | 73 MAIN ST NEW CASTLE, NH 03854 - 9998 | 603-436-3485 | Mon-Fri 08:30 AM - 12:30 PM 02:30 PM - 04:45 PM Sat 09:00 AM - 11:45 AM Sun Closed |
| Post Office | Address | Phone | Hours |
| NEW CASTLE | 73 MAIN ST NEW CASTLE, NH 03854 - 9998 | 603-436-3485 | Mon-Fri 08:30 AM - 12:30 PM 02:30 PM - 04:45 PM Sat 09:00 AM - 11:45 AM Sun Closed |