The large majority of the people are descended from black Africans, brought to St Lucia as enslaved people during centuries of European rule. There are also many mixed-race people with African, European and Carib heritage, as well as smaller groups of white people (of European decent).

Saint Lucia is a Caribbean nation with a demographic profile that is predominantly of African descent, with approximately 85% to 90% of the population identifying as Black. This cultural and ethnic makeup is a direct result of the island's history of the Atlantic slave trade and the colonial plantation economy under both French and British rule. The nation’s identity is a vibrant "Creole" mix, where African heritage blends with French and British influences in language, music, and food. English is the official language, but "Saint Lucian French Creole" (Kwéyòl) is widely spoken and serves as a powerful symbol of the island's African roots and resistance. In 2026, St. Lucia is celebrated for its rich cultural festivals, such as Jounen Kwéyòl, which honor the African traditions that have shaped the island's soul. While the population includes small minorities of East Indian, European, and mixed-race individuals, the "Black" heritage is the definitive foundation of the country's social, political, and cultural life, making it a proud member of the African diaspora in the Caribbean.