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San Mateo County Fair

The San Mateo County Fair is a week of fun for the whole family! 4-H members across the county compete in youth exhibition categories, including animal showmanship, arts & crafts, and food science. All 4-H youth members are encouraged to participate. Two fundraisers are also held during this event: Pen Pride and Cake Booth. Pen Pride is a market animal (steer, hog, sheep, etc) raised by local 4-H club members. During fair, the public guesses the weight of the animal and 4-H members man the Pen Pride booth. Each club also takes a shift at the cake booth to sell cake. All money earned goes back to our educational programs in our county.

Here are key dates:




February 8, 2020, 10 am to 12 pm

Market beef tagging

Youth must have their original bill of sale and transport papers BEFORE entering the fairground.

March 25 or 30, 2020, 7 pm 

Mandatory meeting for ALL livestock exhibitors and project leaders (need to only attend one meeting)

This meeting will go over fair requirements and the mandatory ethics training that is required by CDFA now.

April 4, 2020, 3 pm to 5 pm

Market goat, lamb and hog tagging and vet check

Youth must have their original bill of sale.

April 13, 2020 by 5 pm

Livestock entries are due.


June 6, 2020, 9 am

Mandatory Barn Set-up

All youth livestock exhibitors are required to attend. 

The fair is held on June 13-21, 2020. For more information, please visit the San Mateo County Fair website.