Situated between the Indian and Pacific oceans, it is the world's largest island country, with more than thirteen thousand islands. At 1,904,569 square kilometres (735,358 square miles), Indonesia is the world's 14th largest country in terms of land area and the 7th largest in terms of combined sea and land area. It has an estimated population of over 261 million people and is the world's 4th most populous country, the most populous Austronesian nation, as well as the most populous Muslim-majority country. Java, the world's most populous island, contains more than half of the country's population. Jakarta is the capital of Indonesia.