 The source of the name of the community is unknown, though a pioneer settlement family of the surname "Conley" lived in DeKalb County (1850 census).Conley is located along the northern border of Clayton County at (33.640142, -84.342255).It is bordered by the city of Forest Park to the south and west, the city of Atlanta to the northwest, and by unincorporated land in DeKalb County to the north.