Our Southgate branch is closed due to a staffing shortage. Please use our Dearborn branch across the street during this time. If you need to access your safe deposit box, please call 406-728-3115. If you have Mortgage Loan inquiries, please call 406-329-1958. We apologize for the inconvenience.

Our Dearborn lobby teller line is temporarily closed. For the time being, please use the drive-thru or another branch. Thank you for your patience.

Our Plains branch lobby is closed. For teller services, please use the drive-thru. To make an appointment with a personal banker or loan officer, please call 826-2000.

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First Security Bank proudly serves MIssoula, Sanders and Ravalli Counties.