First Security Bank has grown from its start in downtown Missoula in 1972 to a trusted financial partner across multiple Montana communities. With full-service branches in Missoula, Corvallis, Hamilton, Plains, Thompson Falls, and Stevensville, we provide individuals and businesses with the tools, guidance, and banking solutions they need to move confidently toward their financial goals. Our teams live and work in the towns we serve, giving us a real understanding of our customers’ needs and a genuine commitment to supporting local progress.

Becoming part of the Glacier Family of Banks in 1996 strengthened our ability to deliver the personal, friendly service our customers rely on while adding the resources of a larger financial network. Today, we proudly invest in more than 400 community organizations each year and continue to serve friends, neighbors, and local businesses with a combination of hometown care and world-class banking expertise.