Telco FCU

 Mobile Deposit App Available


Data processing systems will be consolidated Dec. 4 - 6, 2015 
The merger of Rapid City Telco Federal Credit Union with Sentinel Federal Credit Union was official on Aug. 1, 2015. To complete the transition, our data processing systems are scheduled to be consolidated beginning at 4 p.m. (MT) on Fri., Dec. 4 through Sun., Dec. 6, 2015.

Please read this important information about our upcoming system conversion.

Important Information About Your Account:

Effective immediately, please send all mail and payments to: 

Sentinel Federal Credit Union
PO Box 700
Box Elder SD 57719

Include your member number and loan number with your payments.

Member Number Enhancement Notice
Effective Dec. 5, 2015, your Telco member number will be enhanced to an 8-digit long variation of your current number. To the beginning of your Telco member number, add the number 1 plus enough zeros to create an 8-digit long number. For example, if your Telco member number is 1234, your new Sentinel Federal Credit Union member number will be 10001234. 

Checks and Deposit Slips
You may continue to use your current supply of checks and deposit slips with your existing Telco member number and the Telco routing number. The Telco routing number will continue to remain active even after our conversion for member convenience. 

Our preferred check provider is Legacy Member Services. For your first check order with Legacy, please contact us at 605-923-1405 or toll-free at 888-923-1400. If you need to re-order checks with a third-party vendor, we recommend you contact us prior to ordering for verification of your account information.

Live Call Center Reps Available
Did you know our live call center representatives, Tammy, Maureen and Donna, are available
Monday through Friday from 8 a.m. to 5 p.m. (MT)? Give them a call at 605-923-1405 or toll-free at 888-923-1400. If they are assisting other callers, please don’t hang up, stay on the line, listen to our catchy jingle, and your call will be answered shortly. 

Online Banking
Until our conversion in December, continue to access your existing Telco Online Banking and Online Bill Pay accounts via

Please visit any of our branches in Box Elder, Custer, Ellsworth AFB, Hill City, Rapid City and Winner.




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