| Total population | 14,000,000 peopleUN DESA WPP [2024] 14,050,000 people·World Bank WDI [2024] 14,050,000 people |
| Median age | 16.1 yearsUN DESA WPP [2024] |
| Life expectancy | 63.7–63.8 yearsWorld Bank WDI [2024] 63.82 years·UNDP HDI [2023] 63.65 years |
| Ethnic groups | Hutu, Tutsi, Twa, South AsianCIA World Factbook [2025] · 2026 archive |
| Languages | Kirundi (official), French (official), English (official, least spoken), Swahili (2008 est.)CIA World Factbook [2025] · 2026 archive |
| Religions | Christian 93.9% (Roman Catholic 58.6%, Protestant 35.3% [includes Adventist 2.7% and other Protestant religions 32.6%]), Muslim 3.4%, other 1.3%, none 1.3% (2016-17 est.)CIA World Factbook [2025] · 2026 archive |
| Urbanization | 14.8% of total population (2023)CIA World Factbook [2025] · 2026 archive |
| Population growth | 2.58 %World Bank WDI [2024] |
| Birth rate | 33.2 per 1,000World Bank WDI [2024] |
| Death rate | 6.67 per 1,000World Bank WDI [2024] |
| Urban population | 24.8 %World Bank WDI [2024] |
| Languages (structured) | Burundi Pidgin French / Fuliiru / Ha / Hangaza / Kinyarwanda / Rundi / Shi / Shubi / SwahiliGlottolog [2026] |