Trooz is a Walloon municipality of Belgium in Province of Liege. On July 1, 2012 Trooz had 8,432 registered inhabitants, of whom 4,199 were male and 4,233 female. The total area is 24.00 km² which gives a population density of 351 inhabitants per km². Trooz is situated on the Vesdre River, and is part of the GREOA (Groupement Régional Économiq...