As the 19th century rolled into the 20th, business leaders across the nation began opening independent, community banks to meet the financial needs of families and business owners largely ignored by big-city banks. In northern Maine, Katahdin Trust Company was such a bank; opening its doors in Patten on March 7, 1918.Three years after opening its first office in Patten in 1918, the Bank opened a branch in Island Falls. These remained the only two locations for the next fifty-five years. In 1976 the Bank opened its third office in Oakfield. Eleven years later, the Bank expanded to Houlton and in 1991 opened its fifth office in Presque Isle.During the mid 1990's, as population continued to decline and larger banks continued to reduce their presence in northern Maine, Katahdin Trust Company remained loyal to the area and continued expanding with two new offices in Mars Hill and Caribou and a new Operations Center in Houlton.