County Fair Guide

San Mateo County Fair

San Mateo, California

📅

2026 Dates

June 5–14, 2026

Duration

10 days

👥

Size

large

🕰

Founded

Since 1926

What You'll Find There

Highlights include livestock shows, 4-H and FFA competitions, carnival rides, grandstand entertainment, local food and craft vendors, and the Bay Area community spirit of one of California's wealthiest counties.

The Fair

The San Mateo County Fair is a ten-day June celebration in the heart of the Bay Area Peninsula, drawing families from Silicon Valley and the San Francisco Peninsula for agricultural tradition and fair entertainment. First held in 1926, it's carried on as a California agricultural tradition for well over a hundred years.

Local Tips

San Mateo is between San Francisco and Silicon Valley — the fair is easily accessible from anywhere in the Bay Area and offers a welcome agricultural counterpoint to tech culture.

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