Indonesia is the fourth most populated country in the world with 238,452,952 people (2004 est.) Half of the population lives in Java, There are 111 people per km. The land area is 1.904 million km, or slightly smaller than Mexico. The official language of Indonesia is Bahasa Indonesia, but a total of 737 languages are spoken in different parts of Indonesia. Most of these many languages are only spoken among remote tribal groups. Other languages widely spoken in Indonesia include Javanese, Balinese and Sundanese. Indonesia's neighbors are Papua New Guinea, Malaysia, and East Timor which share land borders with Indonesia. Other nearby countries are Australia to the south, Singapore to the Northwest, and Philippines to the Northeast.