Miquelon Island is one of the three main islands of Saint Pierre and Miquelon. It is connected to the similarly-sized Langlade Island

Langlade Island

Langlade Island, also referred to by foreigners as "Little Miquelon", is part of the commune of Miquelon-Langlade, in the French overseas collectivity of Saint-Pierre and Miquelon...

  (Petite Miquelon) by a thin tombolo

Tombolo

A tombolo, from the Italian tombolo, derived from the Latin tumulus, meaning 'mound,' and sometimes translated as ayre , is a deposition landform in which an island is attached to the mainland by a narrow piece of land such as a spit or bar. Once attached, the island is then known as a tied island...

 sandspit known as La Dune

La Dune

La Dune is the name of the 12 kilometre-long tombolo sandspit which connects Miquelon Island and Langlade Island in the French North American territory of Saint Pierre and Miquelon. A large natural lagoon, Grand Barachois lies at the northern end of the sandspit, where it joins Miquelon...

, which in turn forms a part of the boundary of the Grand Barachois

Grand Barachois

Grand Barachois is a large natural lagoon in Saint Pierre and Miquelon. It lies immediately south of Miquelon Island, and is formed largely by the 12 kilometre-long tombolo of La Dune....

.

Miquelon and Langlade form the commune

Communes of France

The commune is the lowest level of administrative division in the French Republic. French communes are roughly equivalent to incorporated municipalities or villages in the United States or Gemeinden in Germany...

 of Miquelon-Langlade

Miquelon-Langlade

Miquelon-Langlade is the less populated of the two communes making up the French overseas collectivity of Saint Pierre and Miquelon, in North America. They are located to the south of Newfoundland in the Atlantic Ocean...

, with a total population of 616 inhabitants (2006 census). Most residents live in the settlement of Miquelon

Miquelon, Miquelon-Langlade

Miquelon is the capital of Miquelon-Langlade a commune in the French overseas collectivity of Saint Pierre and Miquelon. It is located along a tombolo type isthmus that connects the formerly separate island of Le Cap with the northwestern part of Miquelon Island...

at the north end of the island.