First Security Bank is proud to serve the residents of Gallatin, Chouteau, Teton, and surrounding counties as a community bank. If you would like to join the First Security Bank family as a customer, please contact us at [email protected] or your local branch to open an account.

Celebrating more than 100 years of serving Montanans. Contact Us Today! Mobile App Banking. Overdraft Protection. Competitive Rates. Categories: Residential Loans, Commercial Loans.