Star One Credit Union
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Transact by Mail

Please mail all correspondence to:
Star One Credit Union
P.O. Box 3643
Sunnyvale, CA 94088-3643

Remember to enclose a transaction card or deposit slip.

  • See our Locations page for branch locations, hours, and maps. Click here to contact us. If you would like us to mail you an application or form, use our Mail Request form.
  • When corresponding about your account, always include your name, member number, and loan or account number.
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