County Fair Guide

Columbia County Fair

Dayton, Washington

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2026 Dates

September 11–13, 2026

Duration

3 days

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Size

small

Fair Highlights

Livestock shows, agricultural exhibits, community displays, and local entertainment celebrate the farming traditions of this historic southeastern Washington valley.

A Closer Look

In Dayton, the Columbia County Fair is a three-day September fair in Washington's second-smallest county by population, set in the beautiful Touchet River valley. Dayton is a remarkably well-preserved Victorian-era town with Washington's oldest train depot, and the fair celebrates the wheat farming and wine grape heritage of Columbia County.

Planning Your Visit

Dayton's Victorian downtown is one of Washington's best-kept secrets — the historic depot, National Historic District storefronts, and nearby Palouse Falls make for a wonderful weekend.

Heading to Columbia County Fair?

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