Le Chesnay-Rocquencourt

Le Chesnay-Rocquencourt (French pronunciation: [lə ʃɛnɛ ʁɔkɑ̃kuʁ] ^ⓘ) is a commune in the western suburbs of Paris, in the department of Yvelines.

Le Chesnay-Rocquencourt
Commune
Château Aubert
Location of Le Chesnay-Rocquencourt
Le Chesnay-Rocquencourt Show map of France Le Chesnay-Rocquencourt Show map of Île-de-France (region)
Coordinates: 48°49′16″N 2°07′52″E
Country	France
Region	Île-de-France
Department	Yvelines
Arrondissement	Versailles
Canton	Le Chesnay-Rocquencourt
Intercommunality	CA Versailles Grand Parc
Government
• Mayor (2020–2026)	Richard Delepierre[1]
Area 1	7.02 km2 (2.71 sq mi)
Population  (2022)[2]	31,064
• Density	4,400/km2 (11,000/sq mi)
Demonym(s)	Chesnaycourtois (masculine) Chesnaycourtoise (feminine)[3]
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
INSEE/Postal code	78158 /78150
Elevation	113–179 m (371–587 ft) (avg. 145 m or 476 ft)
1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.

It was established on 1 January 2019 from the amalgamation of the communes of Le Chesnay and Rocquencourt.^[4]

Population

Historical population

Year	Pop.	±% p.a.
1968	15,070	—
1975	26,815	+8.58%
1982	31,681	+2.41%
1990	33,413	+0.67%
1999	31,748	−0.57%
2007	32,672	+0.36%
2012	32,196	−0.29%
2017	31,164	−0.65%
Populations of the area corresponding with the commune of Le Chesnay-Rocquencourt at 1 January 2020, INSEE[5]