| Business | Phone |
| Williams Colage Cu 107 Latham St, Williamstown 1267 | (413) 458-1302 |
| Williams College Empl Fcu Dennison Gate House, Williamstown 1267 | (413) 597-2160 |
| Williamstown Municipal Cu 31 North St, Williamstown 1267 | (413) 458-4441 |
| Steinerfilm Employees Cu 987 Simonds Rd, Williamstown 1267 | (413) 458-5488 |