The vines are mainly concentrated around the city of Reims and the town of Epernay in the Marne valley, but also extend into the departments of the Aube and beyond into the Haute-Marne and Seine-et-Marne.

This is the production area as defined and delimited by French law. Only wines exclusively originating and produced within that area, on premises dedicated to Champagne wines, are legally entitled to use the name Champagne.