A total of almost 3,000 acres were listed for sale in Rhea County, Tennessee, recently, representing a combined approximately $86 million in Rhea County farmsand rural real estate for sale. Rhea County ranks 30th in Tennessee for the combined amount of land currently advertised for sale. Dayton featured the most land for sale. Government and state-level services are the main economic drivers in Rhea County. Rhea County is the 67th largest county (336 square miles) in Tennessee. It's located in the East Central Tennessee region of Tennessee.