Billings Banks 2615 King Ave W Rocky Mountain bank is a community bank serving the state of Montana. The bank has offices in Billings, Bozeman, Bigfork, Kalispell, Plains, Plentywood, Stevensville and Whitehall. RMB offers a wide variety of deposit accounts, credit services, investment products and trust services. Billings MT Banks Rocky Mountain Bank www.rmbank.com financial local banking community banking Rocky Mountain Bank Billings Bozeman Bigfork Broadus Kalispell Plains Plentywood Stevensville Whitehall Montana financial local banking community banking Rocky Mountain Bank Billings Bozeman Bigfork Broadus Kalispell Plains Plentywood Stevensville Whitehall Montana Business Reviews Rocky Mountain Bank Testimonials