First Interstate BancSystem, Inc., is a financial holding company with a medium risk rating score of 28.6 in the Banks industry in the United States of America. As the parent company of First Interstate Bank, it offers a variety of banking and financial services in Idaho, Montana, Oregon, South Dakota, Washington, and Wyoming. Catering to both retail and commercial customers in sectors such as agriculture, education, healthcare, and more, First Interstate BancSystem generates income primarily from interest on loans and investments.