There was a total of nearly $38 million of farms, rural land, hunting land and other land for sale in Lamar County recently on Land.com. The total acreage of all Lamar County farms, hunting land and other rural land and acreage for sale was 2,000 acres. Lamar County ranks 99th out of 159 counties in the Peach State for the combined amount of land currently advertised for sale. Barnesville featured 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.