
Website, midfirst.com. MidFirst Bank is a privately owned financial institution based in Oklahoma City. MidFirst Bank has banking centers in Boulder and Edwards, Colorado. Expands Oklahoma Footprint, Guymon and Cordell bank offices part of Equity Bank's 52-location franchise. WICHITA, Kan., Feb. Online Banking. With MidFirst Bank Personal Online Banking, you can manage your accounts online with secure technology and a variety of.