A total of almost 2,000 acres were listed for sale in Lamar County, Georgia, recently, representing a total value of almost $47 million in Lamar County land for sale. Lamar County ranks 97th in the Peach State for the total acreage of land currently advertised for sale. Among cities in Lamar County with farms, rural land, hunting land and other land for sale, Barnesville had the most land for sale. Government and state-level services are the main economic drivers in Lamar County. Lamar County is Georgia's 147th largest county (185 square miles). It's located in the Historic South Georgia region of Georgia.