Ballancourt-sur-Essonne (French pronunciation: [balɑ̃kuʁ syʁ ɛsɔn] , literally Ballancourt on Essonne) is a commune in the Essonne department in Île-de-France in northern France.

The Essonne forms the commune western border. Ballancourt-sur-Essonne is 37 kilometers south east of Paris-Notre-Dame, point zero from road of France, 13 kilometers south west of Évry, 5 kilometers north east of La Ferté-Alais, 12 kilometers south west of Corbeil-Essonnes, 12 kilometers south east of Arpajon, 15 kilometers south east of Montlhéry, 15 kilometers north west of Milly-la-Forêt, 20 kilometers north east of Étampes, 23 kilometers south east of Palaiseau, 27 kilometers east of Dourdan.

Inhabitants of Ballancourt-sur-Essonne are known as Ballancourtois in French.

Historical population

Year	Pop.	±% p.a.
1968	3,477	—
1975	5,025	+5.40%
1982	5,549	+1.43%
1990	6,174	+1.34%
1999	6,273	+0.18%
2007	7,206	+1.75%
2012	7,454	+0.68%
2017	7,597	+0.38%
Source: INSEE

• The 17th century Château du Saussay and its park were awarded historical monument on January 19, 1951.
• Father of the music rocks(Roches du père la Musique)
• Chapel Saint-Blaise
• Saint-Martin's church
• Maison et parc sauvage de Madame Chaumerdiac situés au 12, rue Pasteur

• Communes of the Essonne department

• Official website (in French)
• Base Mérimée: Search for heritage in the commune, Ministère français de la Culture. (in French)
• Mayors of Essonne Association (in French)