Conley is a census-designated place (CDP) in DeKalb County and Clayton County, Georgia. The population was 6,188 at the 2000 census. The source of the name of the community is unknown. A pioneer settlement family of the surname "Conley" lived in DeKalb County (1850 census). Probably the name of the family was given to the area.
Conley is located at 33°38′25″N 84°20′32″W / 33.64028°N 84.34222°W / 33.64028; -84.34222 (33.640142, -84.342255).
According to the United States Census Bureau, the CDP has a total area of 1.9 square miles (5.0 km²), of which, 1.9 square miles (4.9 km²) of it is land and 0.04 square miles (0.1 km²) of it (1.04%) is water.