Saint Lucia /seɪnt ˈluːʃə/ (French: Sainte-Lucie) is a sovereign island country in the eastern Caribbean Sea on the boundary with the Atlantic Ocean. Part 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 (238.23 sq mi) and has a population of 174,000 (2010). Its capital is Castries.One of the Windward Islands, Saint Lucia was named after Saint Lucy of Syracuse by the French, the island's first European settlers. They signed a treaty with the native Carib Indians in 1660.