A combined around 1,000 acres were listed for sale in Union County recently; the combined value of all Union County farms, rural land, hunting land and other land for sale was around $3 million. Union County ranks 92nd out of 92 counties in the Crossroads of America for the total number of acres of land currently advertised for sale. Of all farms and rural land for sale in Union County, Liberty featured the most land for sale. Union County is the 90th largest county (165 square miles) in Indiana. It's located in the East Indiana region of the state.