The Riley County Zoning Regulations govern the use of property in the unincorporated areas of Riley County. Agricultural uses of property, as determined by the Planning & Development Department, may be exempt from the regulations. The Board of County Commissioners, following the required public notice and hearings, originally adopted the current regulations in 1974. The regulations were last amended in April 2016. Copies of the Zoning Regulations are also for sale in the Planning & Development office.