Warren County Mo Fair 2025 Schedule. Admission prices to the fair are as follows: $10 children 12 and under, free admission children rides:
Barns open to the public 8:00am to 10:00pm (friday and saturday barns open until 11:00pm)***. If you encounter any questions or concerns as you choose your exhibit classes, please feel free to contact the warren county extension office at (309) 734.