Indonesia is a place.
Indonesia . Situated between the Indian and Pacific oceans , it is the world 's largest island country , with more than seventeen thousand islands . At 1,904,569 km2 , Indonesia is the world 's 14th-largest country in terms of land area and world 's 7th-largest country in terms of combined sea and land area . It has an estimated population of over 260 million people and is the world 's fourth most populous country , the most populous Austronesian nation , as well as the most populous Muslim-majority country .