Boulder County Fair

About This Event

The Boulder County Fair is a community-focused county fair held at the Boulder County Fairgrounds in Longmont, Colorado, showcasing local agriculture, livestock exhibitions, and family-friendly entertainment. The event features live music across multiple stages, rodeo-style attractions such as pro bull riding and a demolition derby, plus vendor exhibits and community contests. It serves as an annual showcase of regional farming traditions, hands-on activities, and seasonal celebration for Boulder County residents and visitors.