County Fair Guide

Fairfax County 4-H Fair

Herndon, Virginia

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2026 Dates

Jul 30 – Aug 2, 2026

Duration

4 days

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Size

large

Local Tips

Herndon sits in the heart of Northern Virginia's technology hub near Dulles Airport — the nearby Claude Moore Colonial Farm, Wolf Trap National Park for the Performing Arts, and Great Falls Park offer excellent companion activities.

What You'll Find There

Expect youth livestock and poultry shows, 4-H project competitions, carnival rides, family entertainment, and local food vendors drawing families from across the Northern Virginia tech corridor.

The Fair

The Fairfax County 4-H Fair & Carnival in Herndon is a four-day late-July celebration in the most populous county in Virginia, where the agricultural roots of one of America's wealthiest suburbs are preserved through a thriving 4-H tradition.

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