The organisation named Communauté d'Agglomération de la Région de Château-Thierry is a group of municipalities in the department of the Aisne, in Hauts-de-France. The total population of this intermunicipal organisation is 55663 inhabitants, spread across a surface area of 879.97 km². The population density is 71 inhabitants/km². The altitude varies between 55 metres and 254 metres. The Communauté d'Agglomération de la Région de Château-Thierry public intermunicipal cooperation establishment comprises the 87 municipalities listed below.