Oc County Fair 2024 Dates. The 2024 oc fair runs july 19 through aug. Looking for information on 2025 oc fair competitions?
Members of rcs unload a ride from a truck as they prepare for the oc fair in costa mesa on thursday, july 11, 2024. Mon, august 19, 2024, 6:05 am edt · 8 min read.