Bank of Bridger was first Chartered in August of 1915 and was then known as the First National Bank of Bridger. A few years later, in February of 1919 the Bank became The American National Bank of Bridger before organizing as Bank of Bridger on June 6, 1941. The Bridger Company acquired the Bank of Bridger in 1985 and ownership remains the same today. Throughout the years the bank has expanded with offices in Montana and Wyoming including: Bridger, MT., Joliet, MT., Red Lodge, MT., Harlem, MT., Butte, MT., Plentywood, MT., Lovell, WY., Greybull, WY., Powell, WY., and Thermopolis, WY.