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Town hall
Town hall
Coat of arms of Croissy-sur-Seine
Coat of arms
Croissy-sur-Seine is located in France
Coordinates: 48°52′42″N 2°08′36″E / 48.8783°N 02.1433°E / 48.8783; 02.1433Coordinates: 48°52′42″N 2°08′36″E / 48.8783°N 02.1433°E / 48.8783; 02.1433
Country France
Region Île-de-France
Department Yvelines
Arrondissement Saint-Germain-en-Laye
Canton Chatou
Intercommunality Boucle de Seine
 • Mayor (2008–2014) Jean-Roger Davin
Area1 3.44 km2 (1.33 sq mi)
Population (2006)2 10,325
 • Density 3,000/km2 (7,800/sq mi)
INSEE/Postal code 78190 / 78290
Elevation 19–34 m (62–112 ft)
(avg. 26 m or 85 ft)

1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km² (0.386 sq mi or 247 acres) and river estuaries.

2 Population without double counting: residents of multiple communes (e.g., students and military personnel) only counted once.

Croissy-sur-Seine is a commune in the Yvelines department in the Île-de-France region in north-central France. It is a small but affluent suburban town on the western outskirts of Paris.


Croissy is located on a loop of the river Seine, which forms its eastern, southern, and western boundaries. Croissy's landward neighbours are Chatou, Le Vesinet, and Le Pecq.

  • Area: 3.44 km2 (1.33 sq mi)
  • Average altitude: 26 m


The "centre-ville" provides a reasonable number of shops from bakeries to banks. An active morning market takes place on Fridays and Sundays.

There are several parks, some situated on the islands in the Seine. The commune is home to the 13th century chapel of St Leonard, situated near the banks of the Seine.


In good traffic conditions, you can reach the centre of Paris in 20 minutes from Croissy; in daily commuting conditions it will take one hour.

Croissy is not directly served by rail transportation. The nearest RER station is Chatou-Croissy (on the RER A line St Germain branch). The nearest SNCF service is at Bougival

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