July 20-22 – Tulsa Fairgrounds  

From travelok.com: The Tulsa County Free Fair comes to the Exchange Center at the Tulsa Fairgrounds. This event is open to the public and features 4-H and community exhibits as well as learning events and competitions. On Friday night, the Tulsa County 4-H holds the Festival of Fun with entertainment for the entire family. Admission includes ice cream and live entertainment. There is something for everyone at the Tulsa County Free Fair.