The Communauté d'agglomération Saint Germain Boucles de Seine is the ''

communauté d'agglomération An agglomeration community (, ) is a consortium of communes in France, communes (municipality, municipalities) in France, created as a government structure by the Jean-Pierre Chevènement, Chevènement Law of 1999. It is one of four forms of co ...

'', an intercommunal structure, in the western suburbs of

Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...

. It is located in the

Yvelines Yvelines () is a department in the western part of the Île-de-France region in Northern France. In 2019, it had a population of 1,448,207.Val-d'Oise Val-d'Oise (, "Vale of the Oise") is a department in the Île-de-France region, Northern France. It was created in 1968 following the split of the Seine-et-Oise department. In 2019, Val-d'Oise had a population of 1,249,674.< ...

departments Department may refer to: * Departmentalization, division of a larger organization into parts with specific responsibility Government and military * Department (administrative division), a geographical and administrative division within a country, ...

, in the

Île-de-France The Île-de-France (; ; ) is the most populous of the eighteen regions of France, with an official estimated population of 12,271,794 residents on 1 January 2023. Centered on the capital Paris, it is located in the north-central part of the cou ...

region In geography, regions, otherwise referred to as areas, zones, lands or territories, are portions of the Earth's surface that are broadly divided by physical characteristics (physical geography), human impact characteristics (human geography), and ...

, northern

France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...

. It was created in January 2016. Its seat is in

Le Pecq Le Pecq () 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 center of Paris. Geography The commune of Le Pecq is located in a loop of the Se ...

.CA Saint Germain Boucles de Seine (N° SIREN : 200058519)
BANATIC, accessed 4 November 2024. Its area is 666.7 km². Its population was 335,109 in 2018.Comparateur de territoire
INSEE, accessed 6 April 2022.

Composition

The communauté d'agglomération consists of the following 19 communes, of which one (Bezons) in the Val-d'Oise department:INSEE
/ref> # Aigremont # Bezons # Carrières-sur-Seine # Chambourcy #

Chatou Chatou () is a Communes of France, commune in the Yvelines Departments of France, department in the Île-de-France Regions of France, region in north-central France. Chatou is a part of the affluent suburbs of western Paris and is on the northwest ...

Croissy-sur-Seine Croissy-sur-Seine (, literally ''Croissy on Seine'') is a Communes of France, commune in the Yvelines Departments of France, department in the Île-de-France Regions of France, region in north-central France. It is a suburban town on the western o ...

# L'Étang-la-Ville # Houilles #

Louveciennes Louveciennes () is a Communes of France, commune in the Yvelines Departments of France, department in the Île-de-France Regions of France, region in north-central France. It is located in the western suburbs of Paris, between Versailles (city), V ...

Maisons-Laffitte Maisons-Laffitte () is a Communes of France, commune in the Yvelines Departments of France, department in the northern Île-de-France Regions of France, region of France. It is a part of the affluent outer suburbs of northwestern Paris, from its ...

# Mareil-Marly # Marly-le-Roi # Le Mesnil-le-Roi # Montesson #

# Le Port-Marly #

Saint-Germain-en-Laye Saint-Germain-en-Laye () is a Communes of France, commune in the Yvelines Departments of France, department in the Île-de-France in north-central France. It is located in the western suburbs of Paris, from the Kilometre Zero, centre of Paris. ...

# Sartrouville #

Le Vésinet Le Vésinet () is a suburban Communes of France, commune in the Yvelines Departments of France, department in the Île-de-France Regions of France, region in north-central France. It is a part of the affluent outer suburbs of western Paris, from ...

References

Saint Germain Saint Germain Saint Germain {{ValOise-geo-stub