Manassas · every August
Prince William County Fair 2027
Virginia's largest county fair, held in Manassas every summer for 75 years: nine days of midway rides, demolition derbies and grandstand shows, livestock exhibitions, and fair food. General admission includes all grandstand and midway events.
Quick questions
- When is Prince William County Fair?
- Usually held in August. This year's exact dates appear above as soon as the organizer announces them.
- Where is it held?
- Prince William County Fairgrounds, Manassas.
- Is it good for kids?
- Prince William County Fair is a Washington DC family guide — it is picked with kids in mind. The event listing above shows age guidance when the organizer provides it.
Dates for the next edition are usually announced closer to August. Until then, see what's on this weekend in Washington DC.
Updated September 11, 2026 — this guide refreshes whenever the organizer announces dates.