The organisation named du Grand Paris is a group of municipalities located in the departments of the Essonne, of the Hauts-de-Seine, of Paris, of the Seine-Saint-Denis, of the Val-d'Oise, of the Val-de-Marne. The total population of this intermunicipal organisation is 7086571 inhabitants, spread across a surface area of 814.24 km². The population density is 8386 inhabitants/km². The maximum altitude is 179 metres. The du Grand Paris public intermunicipal cooperation establishment comprises the 131 municipalities listed below.