Outreau is a chief town of canton of northern France, in département of Pas-de-Calais (62), district of Boulogne-sur-Mer. It belongs to agglomeration ' ' Boulogne Côte d'Opal '' which gathers 9 communes, that is to say 122,755 inhabitants.

Population (1999): 15 442 inhabitants for the commune and 18 156 inhabitants for the canton.

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