St. John is one of four islands that make up the US Virgin Islands. The USVI is part of the Leeward Islands chain in the Lesser Antilles. The islands roughly form the dividing point between the Caribbean Sea and the Atlantic Ocean.
St. John is called the “gem of the Caribbean” and has the reputation of being the most beautiful and tranquil island in the West Indies. St. John is less than 20 square miles in area (about the size of Manhattan) and its population is about 5,000. About half of the island is part of the Virgin Islands National Park and as such can never be commercially developed.