Saint Barthélemy (French: Saint-Barthélemy), officially the Collectivity of Saint Barthélemy (French: Collectivité de Saint-Barthélemy), is an overseas collectivity of France. To the northwest lies St. Martin, to the southwest Saba, to the south St. Eustatius and St. Kitts, and ultimately to the southeast Barbuda. Its size is 21 km² with a population 8,450 (census 2007). Its capital is Gustavia. Also known as Saint Barth in French, or St. Barts in English, the collectivity is one of the four territories among the Leeward Islands in the Caribbean that comprise the French West Indies, along with Guadeloupe, Martinique and St. Martin. It is the only one to have historically been a Swedish colony.