The organisation named Communauté d'Agglomération de la Presqu'île de Guérande Atlantique is a group of municipalities located in the departments of the Loire-Atlantique, of the Morbihan. The total population of this intermunicipal organisation is 77665 inhabitants, spread across a surface area of 386.12 km². The population density is 300 inhabitants/km². The maximum altitude is 60 metres. The Communauté d'Agglomération de la Presqu'île de Guérande Atlantique public intermunicipal cooperation establishment comprises the 15 municipalities listed below.