Lesbos or Lesvos is a Greek island located in the northeastern Aegean Sea. It has an area of 1,633 km² (631 sq mi), with approximately 400 kilometres of coastline, making it the third largest island in Greece and the eighth largest in the Mediterranean. It is separated from Asia Minor by the narrow Mytilini Strait. On the southeastern coast is the island's capital and largest city, Mytilene (Μυτιλήνη), whose name is also used for the island as a whole. Lesbos is a separate regional unit with the seat in Mytilene, which is also the capital of the larger North Aegean region. The region includes the islands of Lesbos, Chios, Ikaria, Lemnos, and Samos. The total population of the island was 83,755 in 2021. A third of the island's inhabitants live in the capital, while the remainder are concentrated in small towns and villages. The largest are Plomari, Agia Paraskevi, Polichnitos, Agiassos, Eresos, Gera, and Molyvos.