Review for Sam Houston Race Park Review For Barretts Race Meet At Fairplex Google User Mar 12 '18 at 6:53 Fairplex, formerly known as the Los Angeles County Fairgrounds prior to 1984, has been the home of the L.A. County Fair since 1922. It is located in the city of Pomona, California. The L.A. County Fair is now held during the month of September, but the facility is used year-round to host a variety of educational, commercial, and entertainment such as trade and consumer shows, conventions, and sporting events. View full site to comment or like