Somewhat in the way that the City of London is different from London, the City of Brussels is different from Brussels. However, the expansion of the City was frozen at a later stage than the City of London, so that in addition to the old centre of Brussels, the towns of Haren, Laeken and Neder-Over-Heembeek to the north, and Avenue Louise and the Bois de la Cambre park to the south, are included.
On 1 January 2006, the City of Brussels had a total population of 144,784. The total area is 32.61 km2 which gives a population density of 4,440 inhabitants per km2. As of 2007, there were approximately 50,000 registered non-Belgians in the City of Brussels.