Courcelles is a municipality of Wallonia located in the province of Hainaut, Belgium. As of January 1, 2006, Courcelles had a total population of …Courcelles is a municipality of Wallonia located in the province of Hainaut, Belgium. As of January 1, 2006, Courcelles had a total population of 29,626. The total area is 44.24 km² which gives a population density of 670 inhabitants per km².