Châteaufort, Yvelines

Châteaufort
Châteaufort
Commune
	Town hall
	Coat of arms
	Location of Châteaufort
	Châteaufort Châteaufort
	Coordinates: 48°43′56″N 2°05′32″E / 48.7322°N 2.0922°E
Country	France
Region	Île-de-France
Department	Yvelines
Arrondissement	Versailles
Canton	Maurepas
Intercommunality	CA Versailles Grand Parc
Government
• Mayor (2020–2026)	Patrice Berquet
Area 1	4.88 km2 (1.88 sq mi)
Population (2022)	1,540
• Density	320/km2 (820/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
INSEE/Postal code	78143 /78117
Elevation	86–164 m (282–538 ft) ; (avg. 150 m or 490 ft)
	1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.

Châteaufort (French pronunciation: [ʃɑtofɔʁ]) is a commune in the Yvelines department in Île-de-France in north-central France. It is located 9 km (5.6 mi) south of Versailles, and 27 km (17 mi) southwest of Paris.

Châteaufort inhabitants are named Castelfortain.

The commune is named after the existence of three fortified castles during the Middle Ages; indeed, château fort means "fortified castle" in French.

On August 19, 1913, ahead of the Châteaufort aerodrome, the French aviator Adolphe Pégoud became the first man to jump from a plane using a parachute. The jump was made from a Blériot plane 200 m above the ground.

In the 20th century, Farman Aviation Works was headquartered in Châteaufort.