Hoeilaart is a municipality in the province of Flemish Brabant, in Flanders, one of the three regions of Belgium. The name Hoeilaart is of Gallic-Celtic origin, coming from "Ho-Lar," meaning a high clearing in the woods. Residents are called Hoeilanders or Doenders. The municipality only comprises the town of Hoeilaart proper. On January 1, 2006 Hoeilaart had a total population of 10,074. The total area is 20.43 km² which gives a population density of 493 inhabitants per km². Hoeilaart also sometimes called "The Glass Village" because of the greenhouse grape cultivation that once took place.