contact us

Send Us A Message

Give Us A Call

CALL CENTER
Mon – Fri 8:00am – 5:00pm MT
Main Phone: 605-923-1405
Toll-Free: 888-923-1400
Overseas DSN: 675-6303

CU*TALK Phone Banking: 866-923-1448

Fax: 605-923-3960

Routing Number: 291479291

LOST, STOLEN OR BLOCKED CARDS
During Normal Business Hours:

Mon – Fri 8:00am – 5:00pm MT
605-923-1405 or 888-923-1400

After Business Hours:
ATM Cards:
Sentinel FCU: 800-472-3272

Debit Cards:
Sentinel FCU: 800-682-6075
Rapid City Telco FCU: 800-236-2442

Credit Cards:
Sentinel FCU: 800-543-5073 (Lost/Stolen); 866-334-1048 (Blocked)
Rapid City Telco FCU: 800-808-7230

Mailing Address

Sentinel Federal Credit Union
PO Box 700
Box Elder, SD 57719

Locations & Hours