The local population in and around the park are the Orang Ulu, Kiput, Kenyah people, Kayan people, Mulut and Penan tribes. Penan people originally maintained a nomadic way of life, but they are now semi-settled around at the southwest portion of the park at Batu Bungan and Long Iman. A small number of them settled near the eastern side of the park and 300 of them have the rights to hunt for pigs and deer at designated hunting grounds.