Büyük Menderes River
Kocabaş is a belde (town) in Honaz district of Denizli Province, Turkey. It is situated at in the plains of Büyük Menderes River (historical "Maeander"). The distance to Honaz is and to Denizli is . The population of Kocabaş was 6420 as of 2012. Although the fertile area round Kocabaş was always populated in the historical ages, the town in the open plains, is a relatively recent settlement probably because of the security reasons.