The organisation named Communauté d'Agglomération de la Région Dieppoise is a group of municipalities in the department of the Seine-Maritime, in Normandy. The total population of this intermunicipal organisation is 46859 inhabitants, spread across a surface area of 128.97 km². The population density is 297 inhabitants/km². The maximum altitude is 130 metres. The Communauté d'Agglomération de la Région Dieppoise public intermunicipal cooperation establishment comprises the 16 municipalities listed below.