 It was bound to Gebze district until transferring to Körfez in 1987 and had municipality status until 2009.It consists of 17 Ağustos (August 17), Agah Ateş, Cumhuriyet, Hacı Akif, Kışladüzü (formerly village), Şirinyalı (formerly village) and Yukarı Hereke "mahalles".It can be reached by minibus (from Gebze and İzmit), public bus (from Darıca, Gebze and İzmit), Adapazarı Express train, ship and sea bus.