Élancourt (French pronunciation: [elɑ̃kuʁ] ) is a commune in the Yvelines department, and the Île-de-France region, north central France. It is located in the western suburbs of Paris, 30.6 km (19.0 mi) from the center of Paris, in the "new town" of Saint-Quentin-en-Yvelines.

Élancourt is not linked directly to the Paris Métro, RER, or suburban rail network. The closest station to Élancourt is La Verrière station on the Transilien La Défense and Transilien Paris-Montparnasse suburban rail lines. This station is located in the neighbouring commune of La Verrière, 1.4 km (0.9 mi) from the town center of Élancourt.

Historical population

Year Pop. ±% p.a. 1793 300 —     1800 327 +1.24% 1806 327 +0.00% 1821 312 −0.31% 1831 374 +1.83% 1836 388 +0.74% 1841 352 −1.93% 1846 360 +0.45% 1851 336 −1.37% 1856 307 −1.79% 1861 382 +4.47% 1866 488 +5.02% 1872 632 +4.40% 1876 602 −1.21% 1881 598 −0.13% 1886 626 +0.92% 1891 614 −0.39% 1896 655 +1.30%	Year Pop. ±% p.a. 1901 598 −1.80% 1906 634 +1.18% 1911 709 +2.26% 1921 915 +2.58% 1926 910 −0.11% 1931 986 +1.62% 1936 838 −3.20% 1946 884 +0.54% 1954 900 +0.22% 1962 729 −2.60% 1968 861 +2.81% 1975 10,629 +43.19% 1982 20,129 +9.55% 1990 22,584 +1.45% 1999 26,655 +1.86% 2007 27,613 +0.44% 2012 26,488 −0.83% 2017 25,400 −0.84%
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Source: EHESS and INSEE (1968-2017)

France Miniature is a tourist attraction in Élancourt featuring scale models of major French landmarks and monuments in an outdoor park.

The Colline d'Élancourt, an artificial hill made by landfill, is the highest point in Île-de-France. It is a public park, and hosted the mountain biking events during the 2024 Summer Olympics in Paris.

The commune has 13 preschools and 10 elementary schools.

Public junior high schools in Élancourt:

• Collège de l’Agiot
• Collège de la Clef de Saint-Pierre
• Collège Louis Pergaud

In addition the community is served by Collège Alexandre Dumas and two public senior high schools/sixth form colleges, Lycée Dumont d’Urville and Lycée Polyvalent des 7 Mares, all in nearby Maurepas.

Versailles Saint-Quentin-en-Yvelines University provides tertiary educational services in the area.

Élancourt is twinned with:

• Laubach, Germany, since 1975
• Cassina de' Pecchi, Italy, since 1997
• Gräfenhainichen, Germany, since 2003
• Attard, Malta

• Communes of the Yvelines department

• http://www.ville-elancourt.fr/