Boulder County Fair

Festivals & Fairs · Longmont

Classic county fair at the Longmont fairgrounds with rides, rodeo and 4-H exhibits.

#summer#4-H

Getting there

Hours, prices and programs change seasonally — check the official site before you go. Own or run this business? Claim or update this listing.

Golden

Summer county fair at the Jeffco Fairgrounds with 4-H animals, rides and live entertainment.

Castle Rock

Late-summer fair and rodeo with mutton bustin', a parade, carnival and livestock shows.

Lafayette

Play-based learning museum with pretend play, building zones and science exhibits for younger kids.

Lafayette

Indoor amusement park packed with inflatables, slides and obstacle courses. Popular for parties.

Boulder

Boulder's professional company and school, with youth classes and a holiday Nutcracker.