A total of almost 1,000 acres were listed for sale in Union County recently, representing a total value of around $9 million in Union County ranches, farms, hunting land and other rural land and acreage for sale. Union County ranks 69th in the Cyclone State for the total number of acres of land currently advertised for sale. Of all farms, ranches, hunting land and other land for sale in Union County, Creston had the most land for sale. From an economic perspective, manufacturing and related services are the main sectors in Union County. Union County is Iowa's 91st largest county (425 square miles). It's located in the Western Iowa region of the state.