Ilıdağ is a neighborhood in Köşk District, in Aydın Province, Türkiye. Ilıdağ lies in the Aydin mountains. It has 1,534 inhabitants (2022). The nearest city is Aydın, 20 km to the southwest. Among the landmarks around are Nysa on the Maeander (11.5 km), Seikilos epitaph (20 km) and Acharaca (8.4 km).