| Total population | 867,000 peopleUN DESA WPP [2024] 866,600 people·World Bank WDI [2024] 866,600 people |
| Median age | 20.5 yearsUN DESA WPP [2024] |
| Life expectancy | 66.8–67 yearsWorld Bank WDI [2024] 67.02 years·UNDP HDI [2023] 66.78 years |
| Ethnic groups | Antalote, Cafre, Makoa, Oimatsaha, SakalavaCIA World Factbook [2025] · 2026 archive |
| Languages | Arabic (official), French (official), Shikomoro (official; similar to Swahili), ComorianCIA World Factbook [2025] · 2026 archive |
| Religions | Muslim 98.1% (overwhelmingly Sunni Muslim, small Shia Muslim and Ahmadiyya Muslim populations), ethnic religionist 1.1%, Christian 0.6%, other 0.3% (2020 est.); note: Sunni Islam is the state religionCIA World Factbook [2025] · 2026 archive |
| Urbanization | 30.1% of total population (2023)CIA World Factbook [2025] · 2026 archive |
| Population growth | 1.89 %World Bank WDI [2024] |
| Birth rate | 28.2 per 1,000World Bank WDI [2024] |
| Death rate | 7.12 per 1,000World Bank WDI [2024] |
| Urban population | 33.5 %World Bank WDI [2024] |
| Languages (structured) | Maore Comorian / Mwali Comorian / Ndzwani Comorian / Ngazidja Comorian / Standard ArabicGlottolog [2026] |