Which Champagne subregion is best known for Chardonnay-dominant vineyards south of Épernay?

Côte des Blancs is the Champagne subregion best known for Chardonnay-dominant vineyards south of Épernay.

Its name means “Slope of the Whites,” referring to the predominance of white-grape vineyards. Chardonnay thrives in the chalky soils and favorable exposures of this east-facing escarpment, producing wines valued for freshness, elegance, and aging potential.

The area includes famous villages such as Avize, Oger, Oiry, and Le Mesnil-sur-Oger. Several villages have Grand Cru status, although the Côte des Blancs also contains Premier Cru and other classified sites.

The phrase “Chardonnay country” should not be interpreted as meaning that every bottle from the area is Blanc de Blancs. Producers may blend grapes or source wines from elsewhere. Blanc de Blancs identifies a Champagne made entirely from white grapes, most commonly Chardonnay.