An agglomeration community is a consortium of communes (municipalities) 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.