Tessenderlo is a municipality in the Belgian province of Limburg. It is where the three Belgian provinces of Limburg, Flemish Brabant and Antwerp meet at the front gate of the Averbode Abbey. The municipality Tessenderlo encompasses the villages of Tessenderlo proper, Schoot, Engsbergen, Hulst and Berg. On January 1, 2006, Tessenderlo had a total population of 16,811. The total area is 51.35 km2 which gives a population density of 327 inhabitants per km2.