Lens is a commune in the Pas-de-Calais department in northern France. It is one of France's large Picarde cities along with Lille, Valenciennes, Amiens, Roubaix, Tourcoing, Arras, and Douai. The inhabitants are called Lensois.Metropolitan areaLens belongs to the intercommunality of Lens-Liévin, which consists of 36 communes, with a total population of 250,000. Lens, along with Douai, forms the metropolitan area of Douai-Lens, whose population at the 1999 census was 552,682.