Willebroek (, old spelling:
Willebroeck) is a
municipality located in the
Belgian province of
Antwerp. The municipality comprises the towns of Blaasveld,
Heindonk, Tisselt, Klein Willebroek, and Willebroek proper. On January 1, 2006, Willebroek had a total population of 23,044. The total area is 27.41 km² which gives a
population density of 841 inhabitants per km².