Map of Vaud Buy This Map Click to see large About Vaud: Capital: Lausanne. Largest cities: Lausanne, Yverdon-les-Bains, Montreux, Renens, Nyon, Vevey, Morges. Area: ~ 3,212 km². Population: ~ 800,000. Official languages: French. Code: VD. Joined: 1803.