↑Statistics Belgium; De Belgische Stadsgewesten 2001 (pdf-file) Definitions of metropolitan areas in Belgium. The metropolitan area of Brussels is divided into three levels. First, the central agglomeration (agglomeratie) with 1,451,047 inhabitants (2008-01-01). Adding the closest surroundings (banlieue) gives a total of 1,831,496. And, including the outer commuter zone (forensenwoonzone) the population is 2,676,701. Retrieved on 2008-10-18.