Contact Us

contact phone

Phone   713-778-6300           Fax   713-778-6360

  • Monday – Friday     8:00 a.m. – 4:00 p.m.
  • Wednesday             9:00 a.m. – 4:00 p.m.
  • Closed Weekends


  • Using your touch tone phone you can get account information and perform transactions 24/7 using the Voice Response, simply call 713-778-6350


  • Holiday Schedule


contact email

Methods for Sharing Confidential Information. Confidential information may be securely sent or discussed through the following MCU systems:

Secure Messages is accessed through MCU Online. You must be enrolled in MCU Online to use Secure Messaging.

Encrypted Email If a MCU representative sends you an encrypted email, you will be  asked to login and create a password before you can even view the email.  You may reply to that email and your message will also be encrypted when it is sent back to MCU.

Email Us (general, member service)



Additional Numbers:

  • Lost/Stolen Debit MasterCard® Contact your local branch or call 24/7 services at (800) 528-2273
  • Lost/Stolen Credit Card (800) 820-8450
  • Debit MasterCard®Customer Service:  (800) 851-4859
  • Debit MasterCard® & ATM Activation (866) 619-0245  
  • Debit MasterCard® & ATM Pin Change (800) 851-4859