The Communauté d'agglomération Coulommiers Pays de Brie is the communauté d'agglomération, an intercommunal structure, centred on the town of Coulommiers. It is located in the Seine-et-Marne department, in the Île-de-France region, north-central France. It was created in January 2018 by the merger of the former Communauté de communes du Pays de Coulommiers and the Communauté de communes du Pays Fertois. In January 2020 it was expanded with 12 communes from the former communauté de communes du Pays Créçois. Its population was 92,977 in 2017, of which 15,076 in Coulommiers.