Fontainebleau is a commune in the metropolitan area
Aire urbaine
The aire urbaine is a statistical region created by the INSEE that comprises a commuter belt surrounding a contiguous urban core...

 of Paris
Paris is the capital and largest city in France, situated on the river Seine, in northern France, at the heart of the Île-de-France region...

, France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

. It is located 55.5 kilometres (34.5 mi) south-southeast of the centre of Paris
Kilometre Zero
In many countries, Kilometre Zero or similar terms in other languages, is a particular location , from which distances are traditionally measured...

. Fontainebleau is a sub-prefecture of the Seine-et-Marne
Seine-et-Marne is a French department, named after the Seine and Marne rivers, and located in the Île-de-France region.- History:Seine-et-Marne is one of the original 83 departments, created on March 4, 1790 during the French Revolution in application of the law of December 22, 1789...

 department, and it is the seat of the arrondissement of Fontainebleau
Arrondissement of Fontainebleau
The arrondissement of Fontainebleau is an arrondissement of France, located in the Seine-et-Marne département, in the Île-de-France région...

. The commune has the largest land area in the Île-de-France
Île-de-France (région)
Île-de-France is the wealthiest and most populated of the twenty-two administrative regions of France, composed mostly of the Paris metropolitan area....

 region; it is the only one to cover a larger area than Paris itself.

Fontainebleau, together with the neighbouring commune of Avon
Avon, Seine-et-Marne
Avon is a commune in the Seine-et-Marne department in the Île-de-France region in north-central France.-Geography:Avon and Fontainebleau, together with three other smaller communes, form an urban area of 36,713 inhabitants...

 and three other smaller communes, form an urban area of 36,713 inhabitants (according to the 1999 census).