First Bank & Trust Co. Is a Community Bank. At First Bank & Trust Co., you will feel the difference in the way your financial needs are met, because they are more than just a bank – they’re your bank. Located in Southern Oklahoma, bank’s proud to be a part of both urban and rural communities. They understand the banking needs of small businesses, farmers and ranchers, as well as families and individuals, and are glad to have the opportunity to partner with them in their endeavors.