| Total population | 180,000 peopleUN DESA WPP [2024] 179,700 people·World Bank WDI [2024] 179,700 people |
| Median age | 34.2 yearsUN DESA WPP [2024] |
| Life expectancy | 72.7–72.8 yearsWorld Bank WDI [2024] 72.85 years·UNDP HDI [2023] 72.7 years |
| Ethnic groups | Black/African descent 85.3%, mixed 10.9%, East Indian 2.2%, other 1.6%, unspecified 0.1% (2010 est.)CIA World Factbook [2025] · 2026 archive |
| Languages | English (official), Saint Lucian CreoleCIA World Factbook [2025] · 2026 archive |
| Religions | Roman Catholic 61.5%, Protestant 25.5% (includes Seventh Day Adventist 10.4%, Pentecostal 8.9%, Baptist 2.2%, Anglican 1.6%, Church of God 1.5%, other Protestant 0.9%), other Christian 3.4% (includes Evangelical 2.3% and Jehovah's Witness 1.1%), Rastafarian 1.9%, other 0.4%, none 5.9%, unspecified 1.4% (2010 est.)CIA World Factbook [2025] · 2026 archive |
| Urbanization | 19.2% of total population (2023)CIA World Factbook [2025] · 2026 archive |
| Population growth | 0.256 %World Bank WDI [2024] |
| Birth rate | 11.2 per 1,000World Bank WDI [2024] |
| Death rate | 8.71 per 1,000World Bank WDI [2024] |
| Urban population | 29.1 %World Bank WDI [2024] |
| Languages (structured) | - Saint Lucian Creole French
Glottolog [2026] |