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First Security Bank - Plains

Finance / Banks

510 W Railroad St,
Plains, MT 59859

(406) 728-3115

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Look around and you’ll see First Security Bank employees involved in just about every organization and event in town. They serve as directors on governing boards, as officers in non-profit organizations, as committee members for fund-raisers, or volunteers at countless events to benefit the places we call home in Western Montana.


Business Hours

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 Closed

Sunday Closed