| Business | Phone |
| Williamstown Savings Bank 795 Main St, Williamstown 1267 | (413) 458-8191 |
| Banknorth 57 Spring St, Williamstown 1267 | (413) 458-8321 |
| South Adams Savings Bank 273 Main St, Williamstown 1267 | (413) 458-2141 |
| First Service Bank For Savings 57 Spring St, Williamstown 1267 | (413) 597-3442 |
| Hoosac Bank 296 Main St, Williamstown 1267 | (413) 458-9503 |