Ohio Rev. Code Ann. § 317.081

The county recorder shall keep county and township zoning resolutions, including text and maps, and amendments to them, in his office and make all these documents available for public inspection during normal business hours. By the fifteenth day of January each year, the county recorder shall notify the board of county commissioners and the board of township trustees of each township within the county of that board's duty under section 303.11, 303.12, 519.11, or 519.12 of the Revised Code to file zoning resolutions and amendments in the office of the county recorder. The fee provided in section 317.32 of the Revised Code shall be charged for each resolution and amendment filed in the office of the county recorder.