First Security Bank

Visit any of our locations in Bozeman, Big Sky, Three Forks, West Yellowstone, and Belgrade. First Security Bank is dedicated to serving Gallatin Valley communities. We work hard to bring you the best rates in the industry combined with the most secure banking practices. We are known for providing one-on-one client services with comprehensive banking solutions for our clients. Member FDIC and Equal Housing Lender. Division of Glacier Bank.


55 Lone Peak Dr # A, Big Sky, MT

Open in Google Maps

Open Hours

  • Sunday
  • Monday
    9:00 am - 4:00 pm
  • Tuesday
    9:00 am - 4:00 pm
  • Wednesday
    9:00 am - 4:00 pm
  • Thursday
    9:00 am - 4:00 pm
  • Friday
    9:00 am - 4:00 pm
  • Saturday

Drive Through
8:30am - 4:30pm
ATM located in drive through

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