Solomon Islands is a country consisting of six major islands and over 900 smaller islands in Melanesia, part of Oceania, to the northeast of Australia. It is directly adjacent to Papua New Guinea to the northwest, Australia to the northeast, New Caledonia and Vanuatu to the southeast, Fiji, Wallis and Futuna and Tuvalu to the east, Nauru and the Federated States of Micronesia to the north. It has a land area of 28,400 square kilometers (11,000 sq mi), and a population of approximately 700,000. Its capital, Honiara, is located on the largest island, Guadalcanal. The country takes its name from the wider area of the Solomon Islands (archipelago), which is a collection of Melanesian islands that also includes the Autonomous Region of Bougainville (currently a part of Papua New Guinea), but excludes the Santa Cruz Islands.