From its organization in 1918, the Clay County Fair has evolved over its 90 year history as one of the premier fairs in the United States. That first fair drew about 30,000 people during its four day run. The fair has continued to grow over the years in size, attendance and days of operation. The Clay County Fair has been known as one of the largest county fairs in the country and currently features one of the largest agribusiness/machinery displays of any fair in the United States or Canada. Come join us in September and discover the Clay County Fair.