The Communauté d'agglomération du Pays Voironnais is the communauté d'agglomération, an intercommunal structure, centred on the town of Voiron. It is located in the Isère department, in the Auvergne-Rhône-Alpes region, eastern France. It was created in 2000. Its area is 367.3 km2. Its population was 93,573 in 2018, of which 20,248 in Voiron proper.