Location Details | St. Mary's Credit Union | Marlborough, MA Branch | 133 South Bolton Street* (Temporarily Closed) Skip 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

  • Marlborough133 South Bolton Street* (Temporarily Closed)
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    133 South Bolton Street* (Temporarily Closed)
    Marlborough, MA 01752
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    Toll Free(866) 585-7628
    Phone(508) 490-8000

    *This location has temporarily closed as of the end of business on Friday, November 22, and will reopen in Fall of 2020. Please visit our 133 West Main Street branch, .9 miles away.