Agglomeration communities in France
An agglomeration community is a consortium of communes in France, created as a government structure by the Chevènement Law of 1999. It is one of four forms of an intercommunal structure with fiscal power, less integrated than a métropole or a communauté urbaine but more integrated than a communauté de communes. Agglomeration communities must consist of a contiguous grouping of communes with a total population of at least 50,000, including a central commune with at least 15,000 inhabitants. In the case of an agglomeration community that includes a prefecture, the 50,000 threshold is reduced to 30,000 and the 15,000 threshold does not apply.
As of January 2025, there are 230 agglomeration communities in France. The population of the agglomeration communities ranges from 28,318 inhabitants to 364,744 inhabitants.
Several former communautés d'agglomération have been converted into communautés urbaines or métropoles, for instance those of Strasbourg, Rouen, Saint-Étienne and Caen.