The value of all farms and rural land for sale in Johnson County recently was almost $6 million, representing a total of 952 acres of land for sale in Johnson County. Johnson County ranks 153rd in the Peach State for the total number of acres of land currently advertised for sale. Of all locations in Johnson County with farms and rural real estate for sale, Wrightsville had the most land for sale. Government and state-level services are the main economic drivers in Johnson County. Johnson County is the 98th largest county (306 square miles) in Georgia. It's located in the Historic South Georgia region of Georgia.