COUNTY FAIR
DATES: September 18, 19, 20, 2026
LOCATION: Fairgrounds, Boonville, California
How to enter the Fair
Online Fair Entry
Exhibitor Guide Book 2026
Mendocino County Fair & Apple Show Information
RV PARK & CAMPING
Come stay in beautiful Anderson Valley. The Mendocino County Fair is pleased to offer an RV park at the fairgrounds in Boonville, CA.
RV Park Pricing and Information
EVENT BOOKING
Whether it’s an intimate family reunion or a large corporate event, we have a space for everyone. With indoor and outdoor spaces, you can host an event at the fairgrounds any time of year.