Sullivan County is in Eastern Tennessee. Of the 95 counties in the Volunteer State, 429-square-mile Sullivan County ranks 56th by size. Sullivan County, Tennessee, includes roughly 2,000 acres of residential land and property for sale based on recent Land Network data. The combined market value of farms, rural land, hunting land and other land for sale here was around $214 million. The average price of residential land for sale in Sullivan County was $501,734. Browse all residential land and rural property for sale in Tennessee to find residential land and properties that suit your lifestyle needs, from existing residential homes and estates to land ready for future residential-property development.