For banking by telephone, to find an ATM, or to speak to a Star One phone representative for assistance with this website, please call us at 866-543-5202 or 408-543-5202.
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Convenience, security, and simplicity. Star One provides you with the tools you need to manage your finances easily and worry-free....

Contact us by web or email

Easily set up an in-person or phone appointment with any Star One branch representative.

Our Phone Branch is here to help! You can make a convenient phone appointment to open a New Membership, start a Consumer or Real Estate Loan Application and obtain answers to your questions without visiting a branch.

Please send confidential information only via our secure email service—regular email is unencrypted and not secure.

Welcome to our new secure email system.

You'll be asked to register and create a new password if:

  • This is your first time using the service
  • You used our previous secure email system, but haven't registered on the new service

To sign in, register, or reset your password, visit our Secure Email Message Center and enter your email address.

Please visit here if you are trying to access Secure email (Zixmail) that was sent before 6/1/22.

Use this non-secure form to send us general questions, feedback or reservations for our educational workshops.

To send confidential information (such as Social Security Numbers, account numbers, financial statements), use our Secure Email Message Center instead.


Star One Branch Locations

Branch hours:

  • Masks are recommended but not required in Santa Clara County.
  • Monday, Tuesday, Thursday: 9 AM - 5 PM
  • Wednesday: 10 AM - 5 PM
  • Friday: 9 AM - 6 PM
  • Saturday (Stevens Creek, Blossom Hill and Big Basin branches only): 9 AM - 4 PM

Call Us

Toll-free at (866) 543-5202 or (408) 543-5202

Regular Call Center Hours

  • Monday-Friday: 7 AM-7 PM PT
  • Saturday-Sunday: 9 AM-5 PM PT

Holiday Call Center Hours

  • Christmas, New Year's and Thanksgiving: closed
  • Day before Thanksgiving: 7 AM-6 PM PT
  • New Year's Eve: 7 AM-5 PM PT
  • Christmas Eve and other holidays: 9 AM-5 PM PT

Our Shared Branch call center handles after-hours calls and can assist you with general questions and basic transactions.


Fax: (408) 543-5203
Mailing address: P.O. Box 3643
Sunnyvale, CA 94088-3643

Use our Locator to find ATMs, CO-OP ATMs (including 7-Eleven stores), and Shared Branches.


2022 Holidays—Star One branches will be closed

  • Monday, July 4: Independence Day
  • Monday, September 5: Labor Day
  • Monday, October 10: Columbus Day
  • Friday, November 11: Veterans Day
  • Thursday, November 24: Thanksgiving Day
  • Friday, November 25: Day after Thanksgiving Day
  • Monday, December 26: Christmas Day observed