- Saint Lucia is an island country of the West Indies in the eastern Caribbean. Part of the Windward Islands of the Lesser Antilles, it is located north/northeast of the island of Saint Vincent, northwest of Barbados and south of Martinique. It covers a land area of 617 km2 (238 square miles) with an estimated population of over 180,000 people as of 2018. The nation’s capital and largest city is Castries.
