A map of all the towns in Georgia is available for sale at Mapsofthewold.com. Truck stops and convenience stores in Georgia and states that border Georgia also sell maps. Local visitor centers in Georgia also have maps for sale. Gift shops near tourist attractions often have a variety of maps.
Free maps are available online if a paper copy is not needed. Online retailers such as Amazon.com carry road atlases that contain maps of Georgia cities. Those navigating larger cities might prefer the road atlas over a simple map of cities. The Georgia state website contains GIS maps for public use.