Former Landmark Credit Union Members
A friendly reminder to former Landmark Credit Union Members – please use your Greylock Federal checks
and your Greylock accounts for all ACH transactions. Please call 413-236-4000 to answer your questions. Thank you.
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Williamstown

Greylock Williamstown Office

455 Main St
Williamstown, MA 01267

Phone: (413) 458-4441
Fax: (413) 458-3104

Branch Manager: Steve Wisniowski

Lobby
8:30am–4:00pm, Monday–Friday
8:30am–12:30pm, Saturday

Driveup
8:30am–5:00pm, Monday–Friday
8:30am–12:30pm, Saturday

*Travelers Cheques available