Bank Midwest Banks & Banking AssociationsMortgage Loans & Bankers Bank Midwest Visit Website 434 S Main Ottawa, KS 66067 (785) 242-2900-Main (785) 242-8421 (fax) Facebook Twitter Hours: Main Bank: Mon-Fri Drive Thru: 7:30am-6pm Lobby: 9am-5pm South Bank: Mon-Fri Drive Thru: 7:30am-6pm