Mennecy is a commune in the Essonne department in Île-de-France in northern France. It is 33 km south-east of Paris and crossed by the Essonne river. Inhabitants of Mennecy are known as Menneçois.
Wikipedia https://en.wikipedia.org/wiki/Mennecy
Coordinates 48°33'59.992" N 2°26'4.936" E
