An agglomeration community (French: communauté d'agglomération) is a metropolitan government structure in France, created by the Chevènement Law of 1999. It is the second most integrated form of intercommunality after the urban community. Agglomeration communities consist of a commune of at least 15,000 inhabitants (or a prefecture with less than 15,000 inhabitants) and its independent suburbs.
See more at Wikipedia.org...