Rocquencourt, Yvelines

Rocquencourt
Part of Le Chesnay-Rocquencourt
Town hall
Coat of arms
Location of Rocquencourt
Rocquencourt Show map of France Rocquencourt Show map of Île-de-France (region)
Coordinates: 48°50′13″N 2°06′42″E / 48.8369°N 2.1117°E / 48.8369; 2.1117
Country	France
Region	Île-de-France
Department	Yvelines
Arrondissement	Versailles
Canton	Le Chesnay-Rocquencourt
Commune	Le Chesnay-Rocquencourt
Area 1	2.78 km2 (1.07 sq mi)
Population  (2019)[1]	3,613
• Density	1,300/km2 (3,400/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
Postal code	78150
Elevation	114–179 m (374–587 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.

Rocquencourt (French pronunciation: [ʁɔkɑ̃kuʁ] ^ⓘ) is a former commune in the Yvelines department in the Île-de-France in north-central France. On 1 January 2019, it was merged into the new commune Le Chesnay-Rocquencourt.^[2] It is about 4 kilometres (2.5 mi) north-west of Versailles and 19 kilometres (12 mi) west of center Paris.

The commune is mainly known as the location of a research unit of INRIA (in the Domaine de Voluceau, formerly Camp Voluceau, used by SHAPE) as well as a freeway exchange known as the Rocquencourt Triangle (triangle de Rocquencourt, junction of the A12 autoroute and the A13 autoroute), which is often mentioned in traffic news.