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Typical Month
August
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Duration
4 days
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Size
small
About Jefferson County Fair
The Jefferson County Fair in Boulder is a four-day August celebration in the Jefferson River valley, serving the ranching and mining heritage communities between Helena and Butte.
What to Expect
Expect livestock judging, 4-H competitions, carnival rides, and the working-class mining and ranching community spirit of the Silver Bow corridor.
Visitor Tips
Boulder is between Helena and Butte in the Jefferson River valley — the area's copper and silver mining legacy and the Elkhorn ghost town are distinctive local features.
Places to Stay Nearby
Find hotels and vacation rentals close to Boulder.
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