Rock County Fairgrounds is an event venue in Janesville on Craig Avenue that hosts community programs and annual gatherings. Our grounds serve as the long-standing home of the Rock County 4-H Fair, bringing together livestock exhibits, rides, and local agricultural traditions. Our facilities include dedicated amenities such as a nursing mothers' space equipped with chairs, changing tables, and bench seating within the women's restrooms. Outside of major fair weeks, we open our property for programs and local gatherings.