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

REPORT LOST OR STOLEN CARD
Mon – Fri 8:00am – 5:00pm MT
605-923-1405 or 888-923-1400

After Business Hours
Sentinel FCU Cards:
800-682-6075
ReportMyCards.com

Rapid City Telco FCU Cards:
Debit Cards: 800-236-2442
Credit Cards: 800-808-7230

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

After Hours Assistance
Sentinel FCU Cards:
888-526-0404

Rapid City Telco FCU Cards:
Debit Cards: 800-236-2442
Credit Cards: 800-808-7230

ACTIVATE YOUR SENTINEL FCU CARD
800-411-6390
ActivateMyCards.com

REQUEST A NEW PIN
Available for Sentinel ATM, Debit and chip-enabled Credit Cards.
Call 877-746-6746 anytime and your new PIN will be available within 2 business days.
Visit any Sentinel ATM and your new PIN will be available immediately.

Mailing Address

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

Locations & Hours