The value of land for sale in Union County recently on Land.com was around $58 million. This represents nearly 5,000 acres of land and rural real estate for sale in Union County. Union County ranks 13th out of 82 counties in the Magnolia State for the combined amount of land currently advertised for sale. There were two properties listed as sold in Union County through the Land Network Comparable Sales Program. This represented a total value of $332,794. Of all locations in Union County with land for sale, New Albany 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 72nd largest county (416 square miles) in Mississippi. It's located in the Hills Mississippi region of the state.