Koçak is a neighborhood in Köşk District, in Aydın Province, Türkiye. Koçak lies at 149 m above sea level, in the Aydin mountains. It has 387 inhabitants. The nearest city is Aydın, 16.9 km to the west. Among the landmarks around are Nysa on the Maeander (12.0 km), Seikilos epitaph (17.2 km) and Tralleis (17.0 km).