For More than 100 years the Central St. Louis County fair has brought fun to the country Events include a Sunday parade and car show, live music, kickball tournament, craft show, Annual River to River 5K run/walk, street dance and so much more. There is no admission charge for the fairgrounds. Purchase a $1 fair button to enter the fair building and be registered to win 100s of prizes Some fair events may have their own registration/admission fees.