| Total population | 40,600,000 peopleUN DESA WPP [2024] 40,580,000 people·World Bank WDI [2024] 40,580,000 people |
| Median age | 18.3 yearsUN DESA WPP [2024] |
| Life expectancy | 69.3–69.4 yearsWorld Bank WDI [2024] 69.44 years·UNDP HDI [2023] 69.3 years |
| Ethnic groups | predominantly Arab; but also Afro-Arab, South Asian, EuropeanCIA World Factbook [2025] · 2026 archive |
| Languages | Arabic (official)CIA World Factbook [2025] · 2026 archive |
| Religions | Muslim 99.1% (official; virtually all are citizens, an estimated 65% are Sunni and 35% are Shia), other 0.9% (includes Jewish, Baha'i, Hindu, and Christian; many are refugees or temporary foreign residents) (2020 est.)CIA World Factbook [2025] · 2026 archive |
| Urbanization | 39.8% of total population (2023)CIA World Factbook [2025] · 2026 archive |
| Population growth | 2.98 %World Bank WDI [2024] |
| Birth rate | 34.4 per 1,000World Bank WDI [2024] |
| Death rate | 4.73 per 1,000World Bank WDI [2024] |
| Urban population | 36.8 %World Bank WDI [2024] |
| Languages (structured) | Bathari / Gulf Arabic / Hadrami / Hadrami Arabic / Hijazi Arabic / Hobyót / Jabal Razih / Jibbali / Judeo-Yemeni Arabic / Mehri / Minaean / Najdi Arabic / Qatabanian / Sabaic / Sanaani Arabic / Soqotri / Standard Arabic / Ta'izzi-Adeni Arabic / Yemeni Sign LanguageGlottolog [2026] |