Palau (ⁱ/pəˈlaʊ/, sometimes spelled Belau or Pelew), officially the Republic of Palau (Palauan: Beluu ęr a Belau), is an island country located in the western Pacific Ocean. Geographically part of the larger island group of Micronesia, with the country's population of around 21,000 people spread out over 250 islands forming the western chain of the Caroline Islands. The islands share maritime boundaries with Indonesia, the Philippines, and the Federated States of Micronesia. The most populous island in the group is Koror, with the capital city, Ngerulmud, located on nearby Babeldaob.