Indonesia has regions with people in them.
Indonesia . 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 . The world 's most populous island , Java , contains more than half of the country 's population . Despite its large population and densely populated regions , Indonesia has vast areas of wilderness that support the world 's second highest level of biodiversity . The population is unevenly spread throughout the islands within a variety of habitats and levels of development , ranging from the megalopolis of Jakarta to uncontacted tribes in the east .