Middlefield Banc Corp. operates as the bank holding company for The Middlefield Banking Company that provides various commercial banking services to small and medium-sized businesses, professionals and small business owners, and retail customers in northeastern and central Ohio. It offers checking, savings, negotiable order of withdrawal, money market, and IRA accounts, as wells as time certificates of deposit. The company's loan portfolio includes operational and working capital loans; loans to finance capital purchases; term business loans; residential construction loans; selected guaranteed or subsidized loan programs for small businesses; professional loans; residential mortgage and commercial mortgage loans; consumer installment loans to purchase automobiles and boats, as well as for home improvement and other personal expenditures; and agricultural loans. It also provides safe deposit facilities, travelers' checks, official checks, money orders, and ATM services; online banking and bill payment services to individuals; and online cash management services to business customers. Middlefield Banc Corp. is involved in the resolution and disposition of troubled assets in central Ohio. The company was founded in 1901 and is based in Middlefield, Ohio.