Post office locations in 03781
| Post Office | Address | Phone | Hours |
| PLAINFIELD | 1132 ROUTE 12A PLAINFIELD, NH 03781 - 9998 | 603-675-2723 | Mon-Fri 8:30am - 12:00pm 2:00pm - 5:00pm Sat 8:30am - 11:30am Sun Closed |
| Post Office | Address | Phone | Hours |
| PLAINFIELD | 1132 ROUTE 12A PLAINFIELD, NH 03781 - 9998 | 603-675-2723 | Mon-Fri 8:30am - 12:00pm 2:00pm - 5:00pm Sat 8:30am - 11:30am Sun Closed |