Ohio Rev. Code § 307.20
The board of county commissioners, in addition to its other powers, shall have the same authority, subject to the same limitations, with respect to airports, landing fields, and other air navigation facilities as is conferred upon municipal corporations by sections 717.01 and 719.01 of the Revised Code and may operate thereon public recreation facilities and public parks. The board of county commissioners may contract with any person, firm, or corporation to operate restaurants, parking lots, motels, gasoline service stations, public parks, office buildings, retail stores for merchandising or services, and industrial uses on airports, landing fields, and other air navigation facilities.
"Airport," "landing field," and "air navigation facility," as defined in section 4561.01 of the Revised Code, apply to this section.
R.C. §307.20