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Sentinel Federal Credit Union


4011 Triple Crown Dr.
Rapid City, SD 57701
Fax: 605-923-3960
Last Updated: June 12, 2018




About Sentinel Federal Credit Union

Welcome to
Sentinel Federal Credit Union

Sentinel Federal Credit Union makes handling your money easy! With better rates and fewer service charges, enjoy an above-and-beyond kind of banking experience with us!

Click Here To Join Sentinel Federal Credit Union Today!


We are excited to offer a variety of online and mobile banking services, including our brand new mobile app! Deposit checks and monitor your accounts from the ease of your smartphone! Simply logon to your account to pay bills, transfer funds, deposit checks, and more! Applying for a personal loan or automobile loan? We make that easy, too! With an e-signature, you can complete your paperwork online!

About Sentinel Federal Credit Union

Originally known as Ellsworth Air Force Base Federal Credit Union, Sentinel Federal Credit Union opened their first branch in 1955. We serve nine South Dakota counties with seven convenient locations! We are also part of a shared branching network, which makes accessing your accounts even easier! For a complete list of our Xtend Shared Branch locations, click here!

Equal Housing Lender and Federally Insured by NCUA



sentinel federal credit union collage



So How Do I Get Started?

If you live, work, worship or go to school in Pennington, Lawrence, Meade, Custer, Lyman, Todd, Tripp, Gregory and Mellette counties in South Dakota, you are eligible for membership! Learn more about becoming a member here.

Why Sentinel Federal Credit Union?

Anthony Halsey, Sentinel Federal Credit Union Member Since 2001

"I repeatedly come back for services at Sentinel Federal Credit Union simply because of the superior way the staff treats me. I thank them for the kind assistance they provide and the excellent services they give."

Paula Goodwin, Sentinel Federal Credit Union Member Since 2000

"I love Sentinel Federal Credit Union’s Call Center. They are all so helpful and I don’t know what I would do without Donna and the rest of the team. They are always so terrific."

Hugh Watkins, Sentinel Federal Credit Union Member Since 2000

"I have been a Sentinel Federal Credit Union member for over 16 years and have found the service nothing less than outstanding. I have always been treated as a person and not just a number. I will continue to be a member and would recommend Sentinel to anyone."

    Contact Information For
Sentinel Federal Credit Union

4011 Triple Crown Dr.
Rapid City, SD 57701



  • Accepts:
  • American Express
  • Cash
  • Cashier Check
  • Check
  • Discover
  • MasterCard
  • Visa


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