Middlefield Banc Corp. is a bank holding company for The Middlefield Banking Company. It offers its customers a broad range of banking services, including checking, savings, and negotiable order of withdrawal (NOW) accounts; money market accounts; time certificates of deposit, commercial loans, real estate loans, and various types of consumer loans; safe deposit facilities, and traveller's checks. The Company also offers online banking and bill payment services. Middlefield Banc Corp. is headquartered in Middlefield, Ohio.