MidFirst Bank, headquartered in Oklahoma City, Oklahoma, holds the distinction of being the largest privately owned bank in the United States, boasting assets of $36.5 billion. The bank serves as a financial cornerstone in regions including Oklahoma, Denver, Phoenix, and Dallas, with additional commercial lending offices in major cities such as Atlanta, Boston, Chicago, Detroit, Houston, Nashville, New York City, Orlando, Salt Lake City, San Antonio, St. Louis, and Southern California.

Notably, MidFirst Bank extends its banking reach with branches in Boulder and Edwards, Colorado. In a commitment to providing comprehensive financial services, the bank also operates 1st Century Bank of Los Angeles as a division and has MidFirst Business Credit of Atlanta as a subsidiary, enhancing its footprint in the financial landscape.