Contact Us

You can communicate with Security State Bank through the following methods.

Contact Form

To ensure the safety of your financial information, we ask that you do not transmit confidential information such as Social Security numbers, account numbers, user ID’s or passwords via email. You can request more information about products or services offered through our Contact Form below. To protect your personal information such as your account numbers, credit card number or social security number, you may want to call us, send it through the U.S. Post Office, or use this link:

Secure Contact Us Form.


We can be reached at 855.647.2228 Monday through Friday during normal business hours. An after hours message system is also available.

  • To report a lost or stolen Advantage ATM/Debit Card: Call 1-877-219-4344 24 hours a day/seven days a week
  • To report a lost or stolen Security State Bank Visa Credit Card: Call 1-800-883-0131 24 hours a day/seven days a week


Mail deposits, make payments or write to us at:

Tyndall, SD Security State Bank PO Box 9 Tyndall, SD 57066

Chancellor, SD Security State Bank PO Box 107 Chancellor, SD 57015

Heron Lake, MN Security State Bank PO Box 258 Heron Lake, MN 56137

Our Mission

  • An independently owned community bank that provides a high level of integrity, customer service and product innovation at a cost that is representative of the value received, in addition to providing a challenging / rewarding career opportunity and a superior financial performance when compared to its industry peer group.
    - Thomas S. Laird, CEO
    - John J. Baumiller, President