Thank you for your membership! We’re excited to help you live your best financial life.

RTN Federal Credit Union and Merrimack Valley Credit Union merged on June 1, 2023. While we are now one credit union, we will not have fully integrated computer systems until approximately June of 2024. Until that time, here is the easiest way to fully utilize your credit union membership!

Routing Number: 211386445

Please use the RTN routing number when setting up direct deposit or any ACH payment or deposit.

Online Banking: Register for and access online banking here.
Mobile Banking: Learn more and download the Mobile App here.
Branches: While you will receive excellent service at all MVCU branches, you may find it more convenient to visit the branch where you opened your account or one operating on the RTN system until the systems have fully merged. Branch locations include Amesbury, Brookline, Danvers, Dorchester, Marlborough, Tewksbury, Waltham, and Worcester, as well as workplace branches at General Dynamics and Raytheon Technologies.

Click here for branch information and hours.

Contact Information: To reach an MVCU representative, please use this information:

  • Phone: 781-736-9900 (24/7 Member Services)
  • Email:

You may receive emails regarding your account(s) and/or loan(s) from credit union representatives with emails ending in both and It is ok to respond to those emails.