Mendocino County Fair
About this event
The Mendocino County Fair is an agricultural fair in Boonville, California, at Fairgrounds. The 2026 event takes place Sep 18–20, 2026. It holds a 4.6-star rating from 86 Google reviews. Mendocino County Fair will be held on September 18-20, 2026. This fair will feature 4-H shows and exhibits, livestock shows and sale, live entertainment, arts and crafts, exhibits, rides and games, commercial vendors, fair food and more. Hours: 9am-Midnight each day
Location & directions
Fairgrounds, 14400 Hwy 128, Boonville, CA 95415
(707) 895-3011
Frequently asked questions
When is Mendocino County Fair 2026?
Mendocino County Fair takes place Sep 18–20, 2026 in Boonville, California.
Where is Mendocino County Fair held?
Mendocino County Fair is held in Boonville, California, at Fairgrounds, 14400 Hwy 128, Boonville, CA 95415.
What is Mendocino County Fair?
This fair will feature 4-H shows and exhibits, livestock shows and sale, live entertainment, arts and crafts, exhibits, rides and games, commercial vendors, fair food and more.
More agricultural fairs in California
See all 105 →
Recurring4.1(1852) Happening nowSan Mateo County Fair
Bay Area county fair with agricultural displays, livestock, exhibits, carnival, entertainment, and family activities.
Recurring4.5(6085) Happening nowSan Diego County Fair
The largest and longest-running community event in San Diego County at Del Mar Fairgrounds.
4.2(672) Happening nowMerced County Fair
An agricultural fair in Merced.
4(567) Happening nowSolano County Fair
It will feature 4H/FFA exhibits and competitions, livestock shows and sale, great entertainment, carnival rides, live entertainment and performances, food and shopping vendors, and much more.
4.5(743)In 5 daysEl Dorado County Fair
This fair will feature 4-H/FFA shows and exhibits, livestock shows and sale, circus imagination show, funnel cake eating contest, bubble-gum blowing contest, game shows, kids big wheel races, spinning demos, interactive family fun zone, petting zoo, carnival rides, photography and art exhibition, quilt showcase, sheep to shawl demonstrations, commercial vendors, fair food, and more.
Recurring4.3(4885)In 6 daysAlameda County Fair
One of the Bay Area's largest fairs with extensive agricultural exhibits, livestock, carnival rides, live entertainment, and family activities over several weeks.
Other fairs & festivals near Mendocino County
Explore Mendocino County →
4.8(131)Sierra Nevada Arts and Crafts Festival
There will be over 60 booths featuring original handmade art and crafts, antiques, collectibles, and more.
Arnold Labor Day Weekend Arts and Crafts Festival
There will be an array of craftspeople, artists, antique dealers, and all types of food vendors.
Are you the organizer, or spot something out of date? Help keep this listing accurate.