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First Interstate Bank Customers:

Access your Welcome Guide and important transition details here >

Security First Bank: Banking with you in mind

At Security First Bank, it’s all about you! We make banking easier than ever with our complete approach to customer service. We believe that attention to detail, flexible and innovative services and remarkable customer care are the pillars of successful community banking, and we’ve been committed to those standards since our founding in 1898. We offer personal and business banking, savings, loans, home mortgage, and full insurance services. Whether you have small or large-scale needs, we’re here to serve you.

Community News

Celebrating Community Banking Month: Built on Relationships, Rooted in CommunityCelebrating Community Banking Month: Built on Relationships, Rooted in Community

Celebrating Community Banking Month: Built on Relationships, Rooted in Community

April 1st, 2026

Celebrating Community Banking Month April is Community Banking Month—a time to recognize the important role community banks play in strengthening the places we call home.…

Welcome First Interstate Bank CustomersWelcome First Interstate Bank Customers

Welcome First Interstate Bank Customers

March 19th, 2026

If you are a First Interstate Bank customer, your accounts will transition to Security First Bank as part of a scheduled acquisition on April 10,…

Security First Gives Back: 8,789 Items and $18,300 Donated Through 7th Annual Feeding Hearts Food DriveSecurity First Gives Back: 8,789 Items and $18,300 Donated Through 7th Annual Feeding Hearts Food Drive

Security First Gives Back: 8,789 Items and $18,300 Donated Through 7th Annual Feeding Hearts Food Drive

March 18th, 2026

At Security First Bank and Security First Insurance, giving back is at the heart of what we do. This February, we proudly hosted our 7th…