Saint Kitts (also known more formally as Saint Christopher Island is an island in the West Indies. The west side of the island borders the Caribbean Sea, and the eastern coast faces the Atlantic Ocean. Saint Kitts and the neighbouring island of Nevis constitute one country: the Federation of Saint Kitts and Nevis. The island is one of the Leeward Islands in the Lesser Antilles. It is situated about 2,100 km southeast of Miami, Florida. The land area of St.