Clisson is located between Nantes, Cholet and La Roche-sur-Yon, at the border of Maine-et-Loire and Vendée. The municipality had 7,399 inhabitants in 2018. The municipality is part of the Clisson Sèvre et Maine Agglo urban agglomeration community, which has its headquarters there. Since 2006, Clisson has hosted Hellfest, one of Europe's largest heavy metal music festivals. It is the annual gathering of approximately 180,000 people over three days in June.