Kos Kos Kos or Cos (; ) is a Greek island, part of the Dodecanese island chain in the southeastern Aegean Sea, off the Anatolian coast of Turkey. Kos is the third largest island of the Dodecanese by area, after Rhodes and Karpathos; it has a population of 33,388 (2011 census), making it the second most populous of the Dodecanese, after Rhodes. The island measures , and is from the coast of the ancient region of Caria in Turkey. Administratively, Kos constitutes a municipality within the Kos regional unit, which is part of the South Aegean region. The principal town of
Dodecanese Greece. As a part of the 2011 Kallikratis reform, the prefecture was abolished, and its territory was divided into four regional units, within the South Aegean administrative region: The prefecture was subdivided into the following municipalities and communities. These have been reorganised at the 2011 Kallikratis reform as well. Until 1997, the Prefecture of the Dodecanese was subdivided into provinces: Local specialities of the Dodecanese include: Dodecanese The Dodecanese (, ; , "Dodekánisa" , literally "twelve islands") are a group of 15 larger plus 150 smaller Greek islands in the southeastern Aegean Sea, off the coast of Asia Minor (Turkey),