Where and when is the Orange County Fair? Where and when is the Orange County Fair? By Cecil Howard | May 15, 2019 Share this...FacebookPinterestTwitterLinkedin Costa Mesa is home to the very popular Orange County fair. For the 2019 year, the fair will run from July 12th to August 11th at the Orange County Fair and Events Center located at 88 Fair Drive. This fair has a rich past that began in 1890. No related posts.
