Sabah is one of the two Malaysian states on the island of Borneo (Sarawak being the other). It is situated in northern Borneo, bordering the state of Sarawak to the southwest, Kalimantan of Indonesia to the south, while separated by sea from the Federal Territory of Labuan. Sabah shares maritime borders with Vietnam in the west and the Philippines to the north and east. Kota Kinabalu is the capital city, the economic centre of the state and the seat of the Sabah state government. Other major towns in Sabah include Sandakan and Tawau. As of the 2015 census in Malaysia, the state's population is 3,543,500. Sabah has an equatorial climate with tropical rainforests and abundant animal and plant species. The state has long mountain ranges on the west side which form part of the Crocker Range National Park. Kinabatangan River, second longest river in Malaysia runs through Sabah and Mount Kinabalu is the highest point of Sabah as well as of Malaysia.