Grez-Doiceau (French:; Walloon: Gré; Dutch: Graven) is a municipality of Wallonia located in the Belgian province of Walloon Brabant. On January 1, 2006, Grez-Doiceau had a total population of 12,403. The total area is 55.44 square kilometres (21.41 sq mi) which gives a population density of 224 inhabitants per km2. Grez-Doiceau is watered by the Train, a tributary of the Dyle.
The municipality consists of the following districts: Archennes, Biez, Bossut-Gottechain, Grez-Doiceau, and Nethen.
Notable people
The Nobel Prize-winning cytologist and biochemist Christian de Duve (1917–2013) died in Grez-Doiceau.
