This gathering is made of 5 communities comprising 55 communes :

The province comprises four communes, each governed by a municipality, headed by an alcalde.

The canton comprises 4 communes and a total of 19,522 inhabitants (census of 1999, without double counting).

Created in 1996, the association comprises 8 communes as follows:

Created in 1997, the association comprises 9 communes across two départements as follows:

As a second-level administrative division, the province comprises four communes, each with its own governing municipality.

The canton comprises just two communes and a total of 18,408 inhabitants (census of 1999, without double counting).

The province comprises eight communes, each governed by a municipality consisting of an alcalde and municipal council.

The Urban Community originally comprised 55 communes.

Created in 2006, the association comprises 7 communes as follows: