age groups were as follow: were 14 years old and below, were 15 to 24 years old, were 25 to 64 years old, and were 65 years old and above. The population is predominantly rural, whereby lived in rural areas in contrast to in urban areas. The census also recorded 8,578 households living in 8,491 dwellings in the district. In 2020, the district's population was estimated to have increased to 51,500. The main ethnic groups in the district consist of Tutong, Dusun, Kedayan, Iban and Chinese. Healthcare Healthcare in the district began with the establishment of a medical clinic in 1932 in Bukit Bendera area near the district town Pekan Tutong. During the Japanese occupation of Brunei (1941–1945), the clinic building suffered great damage due to bombing. In late 1972, the construction of Tutong District Hospital was completed. It could accommodate 20 beds; healthcare services included surgery room, delivery room, x-ray, dental clinic, outpatient and medical laboratory. The current district hospital is Pengiran Muda Mahkota Pengiran Muda Haji Al-Muhtadee Billah (PMMPMHAMB) Hospital which replaced the former Tutong District Hospital. As of today, it is the sole hospital in the district. There are also four community health centres located in Pekan Tutong, Kampong Sungai Kelugos, Kampong Telisai and Kampong Lamunin. The health centres mainly provide outpatient care to the residents of the village or mukim where they are located, as well as those that live in the surrounding areas. National Isolation Centre Tutong District is home to the National Isolation Centre (NIC, ), the country's dedicated medical isolation facility for communicable diseases. Located in a permanent building beside the district hospital, it was inaugurated by the Crown Prince Al-Muhtadee Billah on 13 November 2012 at a cost of B$8.47 million (US$6.26 million as of September 2021); it can accommodate 136 beds. It is playing a vital role in the COVID-19 situation in Brunei, whereby it is where COVID-19 patients are isolated and treated. A new extension was built in 2020 in the event the existing facility reached full capacity. The construction was completed in three weeks at a cost of B$11 million (US$8.1 million as of September 2021); it can accommodate additional 160 beds. During the COVID-19 outbreak, the adjacent PMMPMHAMB Hospital has also been converted into another extension for the isolation centre. Education In 2019, there were 42 schools in Tutong District under the Ministry of Education, out of which