| Business | Phone |
| True North Insurance Inc 296 Main St, Williamstown 1267 | (413) 458-1805 |
| Coakley Pierpan Dolan/Collins 296 Main St # 1, Williamstown 1267 | (413) 458-8119 |
| Farm Family Insurance Co 115 Water St, Williamstown 1267 | (413) 458-5584 |
| Gallup & Casey Insurance Svc 552 Main St, Williamstown 1267 | (413) 458-5724 |