Ouffet is a municipality of Wallonia located in the province of liège, Belgium. On January 1, 2006, Ouffet had a total population of 2,529. …Ouffet is a municipality of Wallonia located in the province of liège, Belgium. On January 1, 2006, Ouffet had a total population of 2,529. The total area is 40.22 km² which gives a population density of 63 inhabitants per km².