Of 95 counties in the Volunteer State, Sullivan County ranks 56th in terms of size (429 square miles). Sullivan County is in Eastern Tennessee. There is almost 1,000 acres of ranches for sale in Tennessee's Sullivan County based on recent Land Network data. The combined market value of land and rural real estate for sale here is around $1 million. 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 residential property.