American Bank of Oklahoma American Bank of Oklahoma opened for business April 1, 1998, taking seriously the roll of a community-based, full-service institution. Our organizers came from the community and our stockholders are virtually all local citizens. American Bank of Oklahoma currently operates four banking facilities. Our main office is located at 200 East Main Street in Collinsville with branch offices in Skiatook, Ramona and Muskogee. While providing personal customer service as a full service bank, American Bank of Oklahoma also strives to offer a modern approach to banking knowing many customers are more mobile now than ever. Whether business or personal, American Bank of Oklahoma wants to be 'Your Banking Partner'. .