County Fair Guide

Tri-County Fair

Mendota, Illinois

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2026 Dates

September 3–7, 2026

Duration

5 days

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Size

small

Fair Highlights

Expect livestock judging, 4-H competitions, carnival rides, local food vendors, and the community spirit of Mendota and the surrounding farming communities.

A Closer Look

The Tri-County Fair in Mendota is a five-day early-September celebration in north-central Illinois, serving the agricultural communities of LaSalle County's Sweet Corn Capital.

Planning Your Visit

Mendota is in LaSalle County and bills itself as the Sweet Corn Capital of the World — the annual Sweet Corn Festival is a major regional event in this agricultural community.

Heading to Tri-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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