The organisation named Communauté d'Agglomération du Pays de Gex is a group of municipalities in the department of the Ain, in Auvergne-Rhône-Alps. The total population of this intermunicipal organisation is 102304 inhabitants, spread across a surface area of 404.85 km². The population density is 390 inhabitants/km². The altitude varies between 326 metres and 1704 metres. The Communauté d'Agglomération du Pays de Gex public intermunicipal cooperation establishment comprises the 27 municipalities listed below.