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Poissy coat of arms
Poissy (France)
region Île-de-France
Department Yvelines
Arrondissement Saint-Germain-en-Laye
Canton Poissy
Community association Grand Paris Seine et Oise
Coordinates 48 ° 56 '  N , 2 ° 3'  E Coordinates: 48 ° 56 '  N , 2 ° 3'  E
height 17-171 m
surface 13.28 km 2
Residents 37,388 (January 1, 2017)
Population density 2,815 inhabitants / km 2
Post Code 78300
INSEE code
Website www.ville-poissy.fr
Notre-Dame Collegiate Church

Poissy is a French municipality with 37,388 inhabitants (at January 1, 2017) in the department of Yvelines in the region Ile-de-France . It belongs to the arrondissement of Saint-Germain-en-Laye and is the capital of the canton of Poissy .


The city of Poissy is located 32 kilometers west-northwest of the center of Paris on one of the loops of the Seine .


In ancient times Poissy was probably a modest fishing or farming village of the Gallic people of the Carnutes , who lived in the 1950s BC. Was subjugated by Caesar . Gallo-Roman graves were discovered here in 1928.

In the early Middle Ages the place had the Latin name Pinciacum at the time of the Merovingians . At the time of the Carolingians there was already a castle here . In 862, 864 and 868 Charlemagne held national meetings of high dignitaries in the place. In the 13th century Poissy was a favorite residence of Blanka of Castile . Their son, who later became King Louis IX. the saint was probably born here in 1214. He had a stone bridge built over the Seine in Poissy. King Philip IV the Handsome , a grandson of Louis IX, founded the Dominican monastery of Saint-Louis de Poissy at the beginning of the 14th century , for the construction of which the old castle was demolished.

In the initial phase of the Hundred Years War , the English King Edward III fell. in July 1346 in Normandy and on his further train crossed the Seine at Poissy on August 16, 1346, which he had looted and cremated.

From September 3 to October 14, 1561 was in the refectory of the Dominican monastery of Poissy on the initiative of Catherine de Medici in the presence of her son, the minor King Charles IX. , a religious discussion between Catholic and Protestant theologians, the so-called Colloquium of Poissy , was held, which was supposed to lead to a reconciliation between the Huguenots and Catholics of France. For the Protestant side, Théodore de Bèze took part. For example, opinions on the doctrine of the Lord's Supper and the sacraments were discussed . The talks were broken off unsuccessfully.


See also: List of Monuments historiques in Poissy

Industry and Infrastructure

Automobile manufacturing

Motor vehicles were built in Poissy in the early days of automobile construction. Companies such as Automobiles Grégoire (1903-1924), Ouzou (1900-1901) and Soncin (1899-1902) were early automakers in Poissy.

In the city today there is a large car plant of PSA Group ( Peugeot - Citroen ). The plant opened by Ford Société Anonyme Française ( Ford SAF ) in 1940 was sold to Simca in 1954 . After Chrysler took over Simca in the late 1950s, the plant finally came into the possession of the PSA Group in 1978.

Local public transport

The Poissy station is integrated into the local transport system in the greater Paris area through the lines of the S-Bahn lines RER A and Transilien J. The trains stop at Saint-Lazare station in central Paris .

Town twinning

  • The twin town of Poissy is the German town of Pirmasens in Rhineland-Palatinate.



See also


  • Le Patrimoine des Communes des Yvelines. Flohic Editions, Volume 2, Paris 2000, ISBN 2-84234-070-1 , pp. 677-697.

Web links

Commons : Poissy  - collection of images, videos and audio files


  1. Monuments historiques: Collégiale Notre-Dame
  2. Monuments historiques: Villa Savoye