Saclay
Commune
Coat of arms
Location (in red) within Paris inner and outer suburbs
Location of Saclay
Saclay Show map of France Saclay Show map of Île-de-France (region)
Coordinates: 48°43′52″N 2°10′21″E / 48.731°N 2.1724°E / 48.731; 2.1724
Country	France
Region	Île-de-France
Department	Essonne
Arrondissement	Palaiseau
Canton	Gif-sur-Yvette
Intercommunality	CA Paris-Saclay
Government
• Mayor (2020–2026)	Michel Senot[1]
Area 1	13.65 km2 (5.27 sq mi)
Population  (2021)[2]	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: [sa.klɛ]) 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

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 km (2.0 mi) to the south of the town center of Saclay.