From Wikipedia, the free encyclopedia
Coat of arms of Poissy
Location (in red) within Paris inner and outer suburbs
Location (in red) within Paris inner and outer suburbs
Location of Poissy
Poissy is located in France
Poissy is located in Île-de-France (region)
Coordinates: 48°55′46″N 2°02′44″E / 48.9294°N 2.0456°E / 48.9294; 2.0456Coordinates: 48°55′46″N 2°02′44″E / 48.9294°N 2.0456°E / 48.9294; 2.0456
IntercommunalityCU Grand Paris Seine et Oise
 • Mayor (2022–2026) Sandrine Berno Dos Santos[1]
13.28 km2 (5.13 sq mi)
 (Jan. 2019)[2]
 • Density3,000/km2 (7,600/sq mi)
Demonym(s)Pisciacais (masculine)
Pisciacaise (feminine)
Time zoneUTC+01:00 (CET)
 • Summer (DST)UTC+02:00 (CEST)
INSEE/Postal code
78498 /78300
Elevation17–171 m (56–561 ft)
(avg. 27 m or 89 ft)
1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.

Poissy (French: [pwasi] (listen)) is a commune in the Yvelines department in the Île-de-France region in north-central France. It is located in the western suburbs of Paris, 23.8 km (14.8 mi) from the centre of Paris. Inhabitants are called Pisciacais in French.

Poissy is one of the oldest royal cities of Île-de-France, birthplace of Louis IX of France and Philip III of France, before being supplanted from the 15th century by Saint-Germain-en-Laye.

In 1561 it was the site of a fruitless Catholic-Huguenot conference, the Colloquy of Poissy. It is known for hosting the Automobiles Gregoire successively, Matford, Ford SAF, Simca, Chrysler, Talbot factories and now hosts one of France's largest Peugeot factories. The "Simca Poissy engine" was made here.

Poissy is the 165th most populated city in Metropolitan France.


Poissy is located about 30 kilometers west of Paris, in the northeastern part of the Yvelines, 8 kilometers west of Saint-Germain-en-Laye, and 23 kilometers northwest of Versailles, the departmental prefecture.

The city is limited to the east by the forest of Saint-Germain-en-Laye and to the west by the Seine.


Historical population
YearPop.±% p.a.
1793 2,807—    
1800 2,437−2.00%
1806 2,500+0.43%
1821 2,643+0.37%
1831 2,850+0.76%
1836 2,880+0.21%
1841 3,925+6.39%
1846 4,261+1.66%
1851 4,300+0.18%
1856 4,951+2.86%
1861 5,101+0.60%
1866 4,973−0.51%
1872 5,047+0.25%
1876 5,063+0.08%
1881 5,600+2.04%
1886 6,403+2.72%
1891 6,432+0.09%
1896 6,981+1.65%
YearPop.±% p.a.
1901 7,406+1.19%
1906 7,959+1.45%
1911 8,709+1.82%
1921 10,135+1.53%
1926 11,298+2.20%
1931 12,386+1.86%
1936 12,502+0.19%
1946 13,375+0.68%
1954 15,046+1.48%
1962 28,548+8.34%
1968 33,613+2.76%
1975 37,497+1.57%
1982 36,389−0.43%
1990 36,745+0.12%
1999 35,841−0.28%
2007 37,109+0.44%
2012 37,597+0.26%
2017 37,388−0.11%
Source: EHESS[3] and INSEE (1968-2017)[4]


Poissy is served by Poissy station on Paris RER line A and on the Transilien Paris-Saint-Lazare suburban rail line.


Main companies[edit]

PSA Peugeot-Citroën



Technoparc is a Business Park created in 1990, with the intention to facilitate the economic diversification of the city. It occupies about 66 acres on the northeast of PSA Peugeot Citroën factory, bordering the neighbouring commune Achères. The Park welcomes 150 companies employing a total of 2,000 employees. It also hosts The Charles-de-Gaulle High School and The Training Centre for the Employees in Pharmacy (ACPPAV) gathering 1,500 high school students and students. Two business incubator, a heliport, the Chamber of Commerce of Yvelines-Val d'Oise, two hotels, a sports centre and a municipal technical centre are also located there.


Dimanche à Poissy by Meissonier, 1851



  • Musée du jouet, shows 800 games and toys dating between 1850 and 1950.
  • Musée d'art et d'histoire.

Cultural facilities[edit]

  • La salle Molière (theater);
  • Cinema;
  • Library Christine de Pizan;
  • Library André-Malraux.

Poissy in film[edit]


Collège Jean Jaurès

Poissy has ten public preschools, ten public elementary schools, two junior high schools, two senior high schools, a combined junior-senior high school, along with a private preschool and elementary school.[7]

Public secondary schools:

Private elementary schools:


International relations[edit]

Boulevard de Pirmasens in Poissy

Poissy is twinned with:



Stadium Léo-Lagrange
  • Skatepark
  • The golf of Béthemont
  • Stadium Léo-Lagrange, built in 1945
  • Swimming pool des Migneaux and swimming pool Saint-Exupéry
  • AS Poissy

See also[edit]


  1. ^ "Répertoire national des élus: les maires" (in French). data.gouv.fr, Plateforme ouverte des données publiques françaises. 13 September 2022.
  2. ^ "Populations légales 2019". The National Institute of Statistics and Economic Studies. 29 December 2021.
  3. ^ Des villages de Cassini aux communes d'aujourd'hui: Commune data sheet Poissy, EHESS. (in French)
  4. ^ Population en historique depuis 1968, INSEE
  5. ^ Noyau de Poissy website (in French)
  6. ^ "French Blood (2015) - IMDb".
  7. ^ "Les établissements scolaires ." Poissy. Retrieved on September 2, 2016.

External links[edit]