From the Wikipedia page [1]

Communauté d'agglomération Val d'Yerres Val de Seine is the communauté d'agglomération, an intercommunal structure, covering southern suburbs of Paris. It is located in the Essonne department, in the Île-de-France region, northern France. It was created in January 2016. Its population was 177,769 in 2014. Its seat is in Brunoy.

The communauté d'agglomération consists of the following 9 communes:

  • Boussy-Saint-Antoine
  • Brunoy
  • Crosne
  • Draveil
  • Épinay-sous-Sénart
  • Montgeron
  • Quincy-sous-Sénart
  • Vigneux-sur-Seine
  • Yerres
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