Avernes () is a commune in the Val-d'Oise department in Île-de-France in northern France. On 1 January 2018, the former commune of Gadancourt was merged into Avernes.Arrêté préfectoral 25 September 2017
Population Population data refer to the area corresponding with the commune as of January 2025.
See also Communes of the Val-d'Oise department
References
External links
Association of Mayors of the Val d'Oise