The Union County Fair takes over fairgrounds in Marysville from July 20 – July 26, 2025! Catch all of the fair food and fun with entertainment, agriculture, education, arts and crafts, and more. Union County Fair Grandstands Grandstand schedule includes Harness Racing, Demolition Derby, Motocross, Autocross, Bull-riding, Truck and Tractor Pull, Micro Wrestling, and more. … Continue reading 2025 Union County Fair in Marysville