Locations & Hours

ATM Locations

You may access your account, fee-free, by using your Sentinel Federal Credit Union ATM card or Debit Card at the following Sentinel Federal Credit Union-owned ATMs:

447 North Ellsworth Road
Box Elder, SD 57719

22752 Mule Deer Trail
Box Elder, SD 57719

18 Mount Rushmore Road
Custer, SD 57730

2723 Lemay Blvd
Ellsworth AFB, SD 57706

2932 Arnold Dr
Ellsworth AFB, SD 57706

1430 Haines Ave
Rapid City, SD 57701

4011 Triple Crown Dr
Rapid City, SD 57701

Mailing Address

Sentinel Federal Credit Union
PO Box 700
Box Elder SD 57719

Branch Locations & Hours

BOX ELDER

Radar Hill Road Branch
Street Address:
22752 Mule Deer Trail
Box Elder SD 57719

Mailing Address:
PO Box 700
Box Elder SD 57719

Main Phone: 605-923-1405
Toll-Free: 888-923-1400
Fax: 605-791-5511

Call Center Hours:
Mon – Fri 8:00am – 5:00pm MT
Lobby Hours:
Mon – Fri 9:00am – 5:00pm
Drive-Up Hours:
Mon – Thurs 8:00am – 5:00pm
Friday 8:00am – 5:30pm
Saturday Closed

CUSTER

Custer Branch
Street Address:
18 Mount Rushmore Road
Custer, SD 57730

Mailing Address:
PO Box 700
Box Elder SD 57719

Main Phone: 605-923-1405
Toll-Free: 888-923-1400
Fax: 605-673-5385

Call Center Hours:
Mon – Fri 8:00am – 5:00pm MT
Lobby Hours:
Mon – Fri 9:00am – 5:00pm
Drive-Up Hours:
Mon – Thurs 8:00am – 5:00pm
Friday 8:00am – 5:30pm
Saturday 9:00am – Noon

ELLSWORTH AFB

Main Office
2723 Lemay Blvd
Ellsworth AFB, SD 57706

Mailing Address:
PO Box 700
Box Elder SD 57719

Main Phone: 605-923-1405
Toll-Free: 888-923-1400
Fax: 605-923-3960
Overseas DSN: 675-6303

Call Center Hours:
Mon – Fri 8:00am – 5:00pm MT
Lobby Hours:
Mon – Fri 9:00am – 5:00pm

HILL CITY

Hill City Branch
Street Address:
553 E. Main Street
Hill City, SD 57745

Mailing Address:
PO Box 240
Hill City, SD 57745

Main Phone: 605-923-1405
Toll-Free: 888-923-1400
Fax: 605-574-9598

Call Center Hours:
Mon – Fri 8:00am – 5:00pm MT
Lobby Hours:
Mon – Fri 8:00am – 5:00pm
Saturday 9:00am – Noon

RAPID CITY

Haines Branch

1430 Haines Ave Ste 101
Rapid City, SD 57701

Main Phone: 605-923-1405
Toll-Free: 888-923-1400
Fax: 605-348-8047

Call Center Hours:
Mon – Fri 8:00am – 5:00pm MT
Lobby Hours:
Mon – Fri 9:00am – 5:00pm
Drive-Up Hours:
Mon – Fri 7:30am – 5:30pm
Saturday 9:00am – Noon

Triple Crown Branch

4011 Triple Crown Dr
Rapid City, SD 57701

Main Phone: 605-923-1405
Toll-Free: 888-923-1400
Fax: 605-342-2055

Call Center Hours:
Mon – Fri 8:00am – 5:00pm MT
Lobby Hours:
Mon – Fri 9:00am – 5:00pm
Drive-Up Hours:
Mon – Thurs 8:00am – 5:00pm
Friday 8:00am – 5:30pm
Saturday 9:00am – Noon

WINNER

Winner Branch
Street Address:
757 W 2nd St
Winner, SD 57580

Mailing Address:
PO Box 87
Winner, SD 57580

Phone: 605-842-3581
Toll-Free: 888-923-1400
Fax: 605-842-1370

Lobby Hours:
Mon – Fri 8:30am – 3:30pm CT
Drive-Up Hours:
Mon – Fri 8:00am – 3:30pm CT

Shared Branches