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