FSB of Byron

Send a Secure Email

Phone Number: 507-775-2316
Fax: 507-775-2510

General Email:

Account-Related Email:

Mailing Address:

First Security Bank
316 Byron Ave N
PO Box 128
Byron, MN 55920


Secure Email

If you need to send personal/confidential information, please use our secure email through ZixCorp

Lost or Stolen Cards

If your card has been lost or stolen, you can call First Security Bank during normal business hours so that we may close the card and re-issue you a new one. You may also call 1-800-554-8969 24 hours a day.

Choose a Gift

Pick Your Gift! Special Ends May 31st

Choose the gift of your choice when you open up a checking account at First Security Bank! Already have an account? You can still get in on the fun. Refer a friend, and you’ll BOTH receive a gift.

New Customer Referring a Friend