Lobbes is a municipality of Wallonia located in the province of Hainaut, Belgium. On 1 January 2006 Lobbes had a total population of 5,499. …Lobbes is a municipality of Wallonia located in the province of Hainaut, Belgium. On 1 January 2006 Lobbes had a total population of 5,499. The total area is 32.08 km² which gives a population density of 171 inhabitants per km².