The organisation named Communauté d'Agglomération de Châlons-en-Champagne is a group of municipalities in the department of the Marne, in Great East. The total population of this intermunicipal organisation is 81427 inhabitants, spread across a surface area of 810.17 km². The population density is 93 inhabitants/km². The maximum altitude is 140 metres. The Communauté d'Agglomération de Châlons-en-Champagne public intermunicipal cooperation establishment comprises the 46 municipalities listed below.