County Fair Guide

Clay County Fair

Spencer, Iowa

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2026 Dates

September 12–20, 2026

Duration

9 days

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Size

large

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Founded

Since 1918

What Sets It Apart

Branded "The World's Greatest County Fair" since 1917, the Clay County Fair in Spencer is widely recognized as one of the largest county fairs in the United States, not just Iowa. It runs nine days each September and hosts the largest agricultural machinery and equipment exposition of any fair in the country, alongside a full carnival midway and grandstand concert lineup.

Source: claycountyfair.com (official)

Fair Highlights

Expect world-class livestock shows, nationally known grandstand entertainment, 4-H and FFA competitions from across Iowa, a massive midway, outstanding food vendors, and the full spectacular experience of one of America's great county fairs.

A Closer Look

Held annually in Spencer, the Clay County Fair is a nine-day mid-September celebration that is one of the largest county fairs in the world, drawing over 325,000 visitors to northwestern Iowa's premier agricultural showcase. First held in 1918, it's carried on as an Iowa agricultural tradition for well over a hundred years.

Planning Your Visit

The Clay County Fair has been called "The World's Greatest County Fair" and draws visitors from across the country — book accommodations in Spencer well in advance, arrive early for livestock competitions, and plan at least two full days.

Heading to Clay 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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