In the summer of 2004, the Johnson County Agriculture Association added a new Astro 9000 sq. ft. building to the Johnson County Fairgrounds. The fairgrounds now consists of 2 year round rental buildings, (Building C-new Astro building), Montgomery Hall and 8 buildings available for rental May through October. The Astro Building C is perfect for individuals or groups to hold events such as: Holiday gatherings, Weddings, Auctions, Company Training, Fundraisers, Seminars, Dances, etc. Building C offers a small kitchen area, large hall area, restrooms with showers, heating and large overhead doors for year round rental. Montgomery Hall is a 2 story building with a kitchen, PA system, video equipment, screens and a podium for year round rental.