If youre headed to this years OC Fair, this app will help you navigate your way through the fairgrounds. Located in Costa Mesa, California, the OC Fair is celebrating its 133rd year from July 14 through Aug. 13 (open Wednesdays-Sundays). Get the daily schedule of entertainment and things to do; an interactive map of food, shopping and amenities; and buy your admission and concert tickets. Dont forget: advance admission tickets are required this year! BONUS: No transaction fees on Fair admission tickets!