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Saclay
Saclay
Commune
	Coat of arms
	Location (in red) within Paris inner and outer suburbs
	Location of Saclay
	Saclay Saclay
	Coordinates: 48°43′52″N 2°10′21″E / 48.731°N 2.1724°E
Country	France
Region	Île-de-France
Department	Essonne
Arrondissement	Palaiseau
Canton	Gif-sur-Yvette
Intercommunality	CA Paris-Saclay
Government
• Mayor (2020–2026)	Michel Senot
Area 1	13.65 km2 (5.27 sq mi)
Population (2021)	4,323
• Density	320/km2 (820/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
INSEE/Postal code	91534 /91400
Elevation	108–161 m (354–528 ft) ; (avg. 147 m or 482 ft)
	1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.

Saclay (French: [saklɛ] ^ⓘ) is a commune in the southwestern suburbs of Paris, France. It is located 18.7 km (11.6 mi) from the centre of Paris. It is best known for the large scientific facility CEA Saclay, mostly dealing with nuclear and particle physics.

Population

Historical population
Year	Pop.	±% p.a.
1968	1,991	—
1975	2,037	+0.33%
1982	1,865	−1.25%
1990	2,894	+5.65%
1999	2,883	−0.04%
2007	3,013	+0.55%
2012	3,637	+3.84%
2017	4,029	+2.07%
Source: INSEE^[3]

Inhabitants of Saclay are known as Saclaysiens in French.

Transport

Saclay is served by no station of the Paris Métro (RER), or suburban rail network. The closest station to Saclay is Le Guichet station on Paris RER line B. This station is located in the neighboring commune of Orsay, 3.2 kilometres (2 miles) to the south of the town center of Saclay.