There was a total of almost $7 million of farms, ranches, and rural real estate for sale in Union County recently on Land.com. The total of all Union County farms, ranches, hunting land and other land for sale was almost 1,000 acres. Union County ranks 61st out of 99 counties in the Wrestling State for the total acreage of land currently advertised for sale. Of all farms, ranches, and rural real estate for sale in Union County, Creston featured the most land for sale. From an economic perspective, manufacturing and related services are the main sectors in Union County. Union County is the 91st biggest county (425 square miles) in Iowa. It's located in the Western Iowa region of the state.