Kapelle-op-den-Bos is a municipality located in the Belgian province of Flemish Brabant. The municipality comprises the towns of Kapelle-op-den-Bos proper, Nieuwenrode and Ramsdonk. On January 1, 2006, Kapelle-op-den-Bos had a total population of 8,904. The total area is 15.25 km2 which gives a population density of 584 inhabitants per km2.