Platte County Fairgrounds is the county fairground for Platte County, at 822 15th St in Columbus. It is generally known locally as Ag Park. Like most Nebraska fairgrounds it is owned by the county agricultural society and is in use well beyond fair week — rodeos, horse shows, tractor pulls, sales and community events. The 4-H side of the county fair is run by Nebraska Extension in Platte County, which handles entries, livestock identification and the certification a young person needs before showing an animal.