The organisation named Communauté de Communes des Villes Sœurs is a group of municipalities located in the departments of the Seine-Maritime, of the Somme. The total population of this intermunicipal organisation is 36871 inhabitants, spread across a surface area of 214.78 km². The population density is 175 inhabitants/km². The maximum altitude is 189 metres. The Communauté de Communes des Villes Sœurs public intermunicipal cooperation establishment comprises the 28 municipalities listed below.