48°42′29″N 02°10′33″E / 48.70806°N 2.17583°E / 48.70806; 2.17583

Paris-Saclay
Communauté d'agglomération
Location within the Essonne department
Country	France
No. of communes	27
Established	1 January 2016
Seat	Orsay
Government
• President	Grégoire de Lasteyrie (Horizons-LFA)
Area	185.9 km (71.8 sq mi)
Population  (2018)	314,169
• Density	1,690/km (4,400/sq mi)
Website	paris-saclay.com

The Communauté d'agglomération Paris-Saclay (or CPS) is an administrative entity in the Essonne département, near Paris. The administrative center is Orsay. It was formed on 1 January 2016 by the merger of the former Communauté d'agglomération du Plateau de Saclay (CAPS) and the Communauté d'agglomération Europ'Essonne(E²). Its area is 185.9 km. Its population was 314,169 in 2018.

The Communauté d'Agglomération Paris-Saclay is located at the north-west of the département of Essonne, on the plateau de Saclay. The altitude is between 47m (154') in Palaiseau and 172m (564') in Gif-sur-Yvette.

The Communauté d'Agglomération Paris-Saclay consists of the following communes:

• At first, the syndicat intercommunal du plateau de Saclay (SIPS) was founded in 1988.
• The 6 December 1991, it became the district du plateau de Saclay (DIPS).
• It became a Communauté de communes then, in 2002, a Communauté d'agglomération.
• Before, communes of Bièvres in Essonne, Buc, Châteaufort, Jouy-en-Josas and Les Loges-en-Josas in Yvelines was in the district.
• In 2004, Gometz-le-Châtel integrates the CAPS.
• In 2010, the CAPS adheres at the syndicat mixte Paris Métropole.

Passenger rail service is provided in the community by RATP and Transilien SNCF in several RER stations in the Paris-Saclay University campus :

• Orsay-Ville station, RER B;
• Massy-Palaiseau station, RER B & C;
• Jouy-en-Josas station (HEC Paris), RER C and future T12;
• Lozère - École Polytechnique station, RER B;

And more in the Paris-Saclay and Versailles research campus :

• Saint-Quentin-en-Yvelines station, RER C and Transilien line N and line U;
• Versailles-Chantiers station, RER C and TER services.

The Paris-Saclay community has the LGV Atlantique high-speed rail line serving the Massy TGV station.

Transports in the Paris-Saclay community is managed by Paris-Saclay Mobilités and provided by Transdev and Keolis.

Long-distance bus service is provided by BlaBlaBus and Flixbus at Massy-Palaiseau RER and SNCF TGV station.

• Official Website