The organisation named Communauté de Communes de la Lomagne Gersoise is a group of municipalities in the department of the Gers, in Occitanie. The total population of this intermunicipal organisation is 19879 inhabitants, spread across a surface area of 683.29 km². The population density is 21 inhabitants/km². The altitude varies between 57 metres and 242 metres. The Communauté de Communes de la Lomagne Gersoise public intermunicipal cooperation establishment comprises the 43 municipalities listed below.