The Interior Division is an administrative division of the state of Sabah in east Malaysia. It occupies the southwest portion of Sabah, bordered by the neighbouring state of Sarawak on its west. With an area of 18,298 square kilometres, it covers 24.9% of Sabah's territory and is home to approximately 14.7% of Sabah's total population.The largest town in the Interior Division is Keningau. Other main towns in this division include Beaufort, Kuala Penyu, Sipitang, Tambunan and Tenom.