When Is The Ohio State Fair 2025. After 6pm, all children under 18 years old must be accompanied by someone 21 or older to enter the fairgrounds. The 2025 ohio state fair opens wednesday, july 24 and runs through sunday, august 4.

Ohio attorney general dave yost has agreed to settle the largest bribery and money laundering scandal in state history with the massive utility that funded it. Next year’s ohio county fairs schedule is set, which also means the dates for the 2025 ohio state fair have been scheduled as well.