What to Know
In Hillsboro, the Jefferson County Fair serves one of Missouri's fastest-growing counties, situated in the scenic hills south of St. Louis along the Big River valley. The fair provides a rural anchor for a community navigating rapid suburban change while honoring its agricultural roots.
On the Midway
Livestock shows, 4-H exhibits, carnival rides, fair food, and entertainment draw families from across Jefferson County and the southern St. Louis suburbs for four days each July.
Before You Go
Hillsboro is a short drive from the Route 66 corridor and Meramec State Park — extend your trip with some scenic Ozark exploration.
Heading to Jefferson County Fair?
Our complete packing list covers what actually makes a difference — sun protection, footwear, and the small things people forget until they need them.
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Nearby County Fairs
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