Normandy is the northwesternmost of the eighteen regions of France, roughly coextensive with the historical Duchy of Normandy.
Normandy is divided into five administrative departments: Calvados, Eure, Manche, Orne and Seine-Maritime. It covers 30,627 square kilometres, comprising roughly 5% of the territory of metropolitan France. Its population of 3,322,757 accounts for around 5% of the population of France. The inhabitants of Normandy are known as Normans, and the region is the historic homeland of the Norman language. The neighboring regions are Hauts-de-France and Ile-de-France to the east, Centre-Val de Loire to the southeast, Pays de la Loire to the south, and Brittany to the southwest. The capital is Rouen.
Normandy's name comes from the settlement of the territory by mainly Danish and Swedish Vikings from the 9th century, and confirmed by treaty in the 10th century between King Charles III of France and the Viking jarl Rollo. For four hundred years following the Norman conquest of England in 1066, Normandy and England were linked by having the same person reign as both Duke of Normandy and King of England.