Pontoise, city (1990 pop. 28,463), capital of Val-d'Oise dept., N central France. It is the site of a technical school. The metallurgy and chemical industries are important. A "new town" called Cergy is south of the city.
Cergy-Pontoise is an agglomeration in France, in the Val d'Oise département, northwest of Paris on the Oise River. It owes its name to two of the communes that it covers, Cergy and Pontoise.

Population (2003): 183,430
Area is 77.74 km²
Population density: 2,360 hab./km²


As of 2005, Cergy-Pontoise is a communauté d'agglomération consisting of twelve communes:


Since the establishment of the new agglomeration, the population has quadrupled over forty years.


In the 1960s, faced by the fast development of Paris and its suburbs, it was decided to control and balance it by creating several new cities around Paris.

To the north, the choice was made on the surroundings of Pontoise. The old city was to be integrated in a much larger unit, whose center would be Cergy, at the time not more than a village. From 1965, the establishment of the new city was to be done in several stages:

Public Transport

Bus services are provided by the Stivo (formerly StAN).

Rail services are provided by both the SNCF and the RATP. Two RER lines begin within the new town.

In the media


Cergy-Pontoise is a sister city to the planned cities of

External links

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