Australia is the sixth-largest country by land area. It is bordered to the west by the Indian Ocean and to the east by the South Pacific Ocean. The Tasman Sea lies to the southeast, separating it from New Zealand, while the Coral Sea lies to the northeast. Papua New Guinea, East Timor and Indonesia are Australia's northern neighbors, separated from Australia by the Arafura Sea and the Timor Sea. Australia is highly urbanized with most of the population heavily concentrated along the eastern and south-eastern coasts. The most-populous states are Victoria and New South Wales, but by far the largest in land area is Western Australia.