Location Details | St. Mary's Credit Union | Marlborough, MA Branch | Not Open to the PublicSkip to content

St. Mary's Credit Union serves Middlesex, Worcester, Norfolk and Suffolk Counties with branches conveniently located in Marlborough, Hudson, Northborough, Framingham and Westborough. Find the one nearest you and make it your one-stop source for all your financial needs.

In addition to our branch ATMs, members can also access cash via thousands of surcharge-free CO-OP and SUM Network ATM locations nationwide.

Our general mailing address is: St. Mary's Credit Union, PO Box 729, Marlborough, MA 01752

If You Are Making A Loan Payment ...

To avoid unnecessary delays - mail loan payments to:

SMCU Payment Processing Center

PO Box 4144

Woburn, MA 01888-4144

  • Member Solutions CenterNot Open to the Public
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    Not Open to the Public
    Marlborough, MA 01752
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    Toll Free(866) 585-SMCU (7628)
    Phone(508) 490-8000
    Monday - Friday8:00 am - 7:00 pm
    Saturday8:00 am - 1:00 pm