Corcyra or Corfu (Greek: Κέρκυρα, Kérkyra, Ancient Greek Κέρκυρα or Κόρκυρα, Latin: Corcyra, Italian Corfù) is a Greek island in the Ionian Sea. It lies off the coast of Albania, from which it is separated by straits varying in breadth from 3 to 23 km (2 to 15 mi), including one near Butrint and a longer one west of Thesprotia. The island is part of the Corfu Prefecture, and includes twelve of the sixteen municipalities or communes in the prefecture and over 96 percent of its population (2001 census). (The four excluded municipalities are Ereikoussa, Mathraki, Othonoi, and Paxoi, which are all on separate islands.)