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Poissy

File:Blason_Poissy01.svg · Wikimedia Commons · See Wikimedia Commons

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Poissy () 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, from the centre of Paris. Inhabitants are called Pisciacais in French. With about 41,000 inhabitants, Poissy is the 5th most populated commune in Yvelines.

OverviewAI-generated

Poissy is a commune in France, situated in the Yvelines department within the Île-de-France region. It serves as the capital of the cantons of Poissy, Poissy-Sud, and Poissy-Nord. The town is located next to the Seine river and shares borders with Achères, Aigremont, Carrières-sous-Poissy, and Chambourcy. Its administrative head is Karl Olive, and it has a population of 40,983.

The area of Poissy is 13.28 square kilometers, with an elevation above sea level of 171 meters. The postal code for the commune is 78300. Poissy is twinned with Pirmasens and Kaluga.

Synthesized by Vinony from 52 facts across 7 sources: Wikidata, Open Meteo, Openweathermap, OpenStreetMap, GeoNames, Vinony graph, Geo. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

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Place details

Locality
Poissy
Region
Île-de-France
Country
France
Population
36,431
Timezone
Europe/Paris

via OpenStreetMap · GeoNames

Air quality

36US AQIGood
PM2.5
5.9 µg/m³
PM10
10.2 µg/m³
As of 2026-08-11 02:00 · Open-Meteo

Key facts

French commune.name
Poissy
French commune.commune status
Commune
French commune.image coat of arms
Blason Poissy01.svg
French commune.map size
270px
French commune.adjustable map
Poissy_map.png
French commune.map caption
Location (in red) within Paris inner and outer suburbs
French commune.arrondissement
Saint-Germain-en-Laye
French commune.canton
Poissy
French commune.INSEE
78498
French commune.postal code
78300
French commune.mayor
Sandrine Berno Dos Santos
French commune.term
2022–2026
French commune.intercommunality
CU Grand Paris Seine et Oise
French commune.elevation m
27
French commune.elevation min m
17
French commune.elevation max m
171
French commune.area km2
13.28
French commune.demonym
Pisciacais (masculine)Pisciacaise (feminine)

via Wikipedia infobox

~5 min read

Encyclopedic overview

20 sections
Contents
  • Location
  • History
  • Demographics
  • Transport
  • Economy
  • Main companies
  • Technoparc
  • Highlights
  • Culture
  • Museums
  • Cultural facilities
  • Poissy in film
  • Education
  • Hospital
  • International Relation
  • People
  • Sport
  • See also
  • References
  • External links

Poissy () 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, from the centre of Paris. Inhabitants are called Pisciacais in French. With about 41,000 inhabitants, Poissy is the 5th most populated commune in Yvelines.

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.

Excerpted from Wikipedia’s “Poissy” article, available under the CC BY-SA 4.0 licence.

Gallery (23)

On the map

3 mapped locations