Main Page | See live article | Alphabetical index Lens is a municipality located in the Belgian province of Hainaut. On January 1st, 2002 Lens had a total population of 3,823 (1,855 males and 1,968 females). The total area is 49.61 km² which gives a population density of 77.06 inhabitants per km². This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.