Zaventem is a Belgian municipality in the province of Flemish Brabant. It is located in the Dijleland area, one of the three large recreational areas which together form the Groene Gordel ("Green Belt") around the Brussels-Capital Region. The municipality comprises the subdivisions or deelgemeenten of Nossegem, Sint-Stevens-Woluwe, Sterrebeek and Zaventem proper. On 1 January 2006 Zaventem had a total population of 28,651. The total area is , which gives a population density of 1,037 inhabitants per km². The official language is Dutch. Zaventem is the home of Brussels Airport, together with neighbouring town of Diegem.