| Total population | 463,000 peopleUN DESA WPP [2024] 462,700 people·World Bank WDI [2024] 462,700 people |
| Median age | 32.2 yearsUN DESA WPP [2024] |
| Life expectancy | 75.3–75.5 yearsWorld Bank WDI [2024] 75.5 years·UNDP HDI [2023] 75.33 years |
| Ethnic groups | Malay 67.4%, Chinese 9.6%, other 23% (2021 est.)CIA World Factbook [2025] · 2026 archive |
| Languages | Malay (Bahasa Melayu) (official), English, Chinese dialectsCIA World Factbook [2025] · 2026 archive |
| Religions | Muslim (official) 82.1%, Christian 6.7%, Buddhist 6.3%, other 4.9% (2021 est.)CIA World Factbook [2025] · 2026 archive |
| Urbanization | 79.1% of total population (2023)CIA World Factbook [2025] · 2026 archive |
| Population growth | 0.819 %World Bank WDI [2024] |
| Birth rate | 13.3 per 1,000World Bank WDI [2024] |
| Death rate | 5.33 per 1,000World Bank WDI [2024] |
| Urban population | 74.9 %World Bank WDI [2024] |
| Languages (structured) | Brunei / Brunei Bisaya-Dusun / Central Melanau / Eastern Penan / Iban / Kelabit / Kiput / Lemeting / Lundayeh / Standard Malay / Tutong / Western PenanGlottolog [2026] |