The value of all land for sale in Johnson County, Georgia, recently was $6 million, representing a combined 762 acres of land for sale in Johnson County. Johnson County ranks 150th in the state for the total number of acres of land currently advertised for sale. Among cities in Johnson County with land and rural real estate for sale, Wrightsville featured the most land for sale. Government and state-level services are the main economic drivers in Johnson County. Johnson County is Georgia's 98th largest county (306 square miles). It's located in the Historic South Georgia region of the state.