On 1 September 2006, the former Aubonne district (District d'Aubonne), Cossonay district (District de Cossonay), and Morges district (District de Morges) were dissolved and merged into the new Morges district. • The municipalities of Apples, Aubonne, Ballens, Berolle, Bière, Bougy-Villars, Féchy, Gimel, Mollens (VD), Montherod, Pizy, Saint-Livres, Saint-Oyens, and Saubraz came from the Aubonne district (District d'Aubonne). • The municipalities of La Chaux (Cossonay), Chavannes-le-Veyron, Chevilly, Cossonay, Cottens (VD), Cuarnens, Dizy, Eclépens, Ferreyres, Gollion, Grancy, L'Isle, Mauraz, Moiry, Mont-la-Ville, Montricher, Orny, Pampigny, Pompaples, La Sarraz, Senarclens, and Sévery came from the Cossonay district (District de Cossonay). • The municipalities of Aclens, Bremblens, Buchillon, Bussy-Chardonney, Chigny, Clarmont, Colombier (VD), Denens, Denges, Echandens, Echichens, Etoy, Lavigny, Lonay, Lully (VD), Lussy-sur-Morges, Monnaz, Morges, Préverenges, Reverolle, Romanel-sur-Morges, Saint-Prex, Saint-Saphorin-sur-Morges, Tolochenaz, Vaux-sur-Morges, and Villars-sous-Yens came from the old Morges district (District de Morges). • The municipality of Allaman came from the old District of Rolle. On 1 July 2011 the municipalities of
Colombier,
Monnaz, and
Saint-Saphorin-sur-Morges merged into the municipality of
Echichens. On 1 January 2021 the former municipality of
Montherod merged into the municipality of
Aubonne. On 1 July 2021 the former municipalities of
Apples,
Cottens,
Pampigny,
Sévery,
Bussy-Chardonney and
Reverolle merged into the new municipality of
Hautemorges. ==Politics==