Sint-Gillis-Waas is a municipality located in the Belgian province of East Flanders. The municipality comprises the towns of De Klinge, Meerdonk, Sint-Gillis-Waas proper and Sint-Pauwels. On January 1st, 2000 Sint-Gillis-Waas had a total population of 17,302 (8,579 males and 8,723 females). The total area is 55.78 km² which gives a population density of 310.18 inhabitants per km².