Boulder County Fair Get ready for a week of pure excitement at the 157th Boulder County Fair where Fair entry and parking are FREE! Enjoy livestock shows, the carnival, over 20 live bands, and so much more, all without an admission fee! For even more thrills, grab tickets for our grandstand events: the Award-Winning CPRA Rodeo on August 6th. Feel the rumble at the Tractor Pull on August 7th. Brace yourself for the Demolition Derby on August 8th! And don't miss the thrilling Mexican Rodeo Fiesta on August 9th! The Boulder County Fair – an experience you won't want to miss. CARNIVAL HOURS: Wednesday: 5 – 11pm Thursday: Noon – 11pm Thursday is Kid’s Day - Discounted carnival wristbands until 4pm Friday: 2pm – 11pm Saturday: Noon – 11pm Sunday: 2pm – 10pm For more information and tickets, go to: http://bouldercountyfair.org