 The species is found only on the western and central portion of the island of Java in Indonesia. Its presence has been confirmed in the Dieng Mountains, and it is known to be found in low densities at Gunung Gede Pangrango National Park (in montane cloud forests) and Mount Halimun Salak National Park, often only where human disturbance is minimal. It inhabits both primary and secondary disturbed forest, and can be found from sea level to 1,600 m (5,200 ft), although it is more commonly found at higher elevations since lower elevations tend to be deforested. A study in 2000 showed that in addition to primary and secondary forest, the Javan slow loris could be found in bamboo forests, mangrove forests, and on plantations — particularly chocolate plantations. In 2008, they were observed in West Java to occupy mixed-crop home gardens, tolerating high levels of human disturbance.
