Established in 1970 when a group of local investors met to form the Oak Trust and Savings Bank, Oak Bank opened its doors on the corner of Oak and Rush streets in the heart of Chicago's Gold Coast neighborhood. Oak Bank is the partner that can bring it all together, including checking, savings, certificates of deposit and a variety of loan products. Oak Bank's online banking has made a significant upgrade to its Internet banking system, allowing it to provide better features including free bill payment service. Oak Bank has been the financial anchor and full-service neighborhood bank of Oak Street for over a quarter of a century. The bank s main branch is located in Chicago.