Important Numbers
General Banking Questions:
877-747-3139 Monday – Friday 8:00am to 4:30pm MST.
Report Lost or Stolen Debit Cards:
After Hours:
800-500-1044
*Please specify Security First Bank – South Dakota when reporting.
Fraud Alert Verification:
Online and Mobile Banking Support:
ExpressLine 24-Hour Phone Banking:
Security First Bank Routing Number:
104113819
