Of 95 counties in the Volunteer State, Sullivan County ranks 56th in terms of size (429 square miles). Sullivan County is in Eastern Tennessee. Recent listings of ranches for sale in Sullivan County, Tennessee, totals approximately 1,000 acres and a combined market value of $1 million. The most common type of land for sale by combined acreage in Sullivan County is house. Browse all Sullivan County ranches for sale on the Land Network to find the ranch that's right for your business or commercial needs, from the sprawling legacy ranch to unbelievable residential ranch for your second home, investment property or retirement nest egg. The most common type of land for sale by combined acreage in Sullivan County is house.