| Business | Phone |
| Plaistow Building Inspector 145 Main St, Plaistow 3865 | (603) 382-1191 |
| Plaistow Health Office 145 Main St, Plaistow 3865 | (603) 382-2494 |
| Plaistow Highway Garage Old County Rd, Plaistow 3865 | (603) 382-6771 |
| Plaistow Historical Society 127 Main St, Plaistow 3865 | (603) 382-1675 |
| Plaistow Manager's Office 145 Main St, Plaistow 3865 | (603) 382-7106 |
| Plaistow Planning Board 145 Main St, Plaistow 3865 | (603) 382-7371 |
| Plaistow Selectmen's Office 145 Main St, Plaistow 3865 | (603) 382-8469 |
| Plaistow Town Cable 17 91 Plaistow Rd, Plaistow 3865 | (603) 382-7463 |
| Plaistow Town Of Pump Station Des Pump Station, Plaistow 3865 | (603) 382-4371 |
| Plaistow Water Pump House Witch Ln, Plaistow 3865 | (603) 382-4161 |
| Plaistown Town Pump Station 146 Main St, Plaistow 3865 | (603) 382-4371 |