Saint Martin is an island in the northeast Caribbean, approximately 300 km east of Puerto Rico. The 87 km2 island is divided roughly 60/40 between France and the Netherlands Antilles; it is the smallest inhabited sea island divided between two nations, a division dating to 1648. The southern Dutch half comprises the Eilandgebied Sint Maarten and is part of the Netherlands Antilles. The northern French half comprises the Collectivity de Saint-Martin and is an overseas collectivity of France.