lithonia is in what county
Lithonia is a city in eastern DeKalb County, Georgia, United States. The city's population was 1,924 at the 2010 census. Lithonia is in the Atlanta metropolitan area. Lithonia means city/town of stone. Lithonia is in the heart of the Georgian granite-quarrying and viewing region, hence the name of the town, from the Greek Î»Î¯Î¸Î¿Ï lithos, for stone. The huge nearby granite dome, Stone Mountain, is composed largely of a rock called Lithonia gneiss, a form of granite.