Florennes is a municipality of Wallonia located in the province of Namur, Belgium. As of 1 January 2006, Florennes has a total population of 1…Florennes is a municipality of Wallonia located in the province of Namur, Belgium. As of 1 January 2006, Florennes has a total population of 10,754. The total area is 133.55 km which gives a population density of 81 inhabitants per km.