The canton of Ermont is an administrative division of the Val-d'Oise department, Île-de-France region, northern France. Its borders were modified at the French canton reorganisation which came into effect in March 2015. Its seat is in Ermont.Décret n° 2014-168 du 17 février 2014 portant délimitation des cantons dans le département du Val-d'Oise
It consists of the following communes: Eaubonne Ermont
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