"Cergy-Pontoise is a new town in France, in the Val d'Oise d\u00E9partement, northwest of Paris on the Oise River. It owes its name to two of the communes that it covers, Cergy and Pontoise.Population (2003): 183,430Area is 77.74 km\u00B2Population density: 2,360 hab./km\u00B2"@en .