Sainte-Geneviève-des-Bois is a commune in the southern suburbs of Paris, France. It is located 23.5 km from the center of Paris, in the arrondissement of Palaiseau, Essonne department, Île-de-France.

Essonne is a department in the southern part of the Île-de-France region in Northern France. It is named after the river Essonne. In 2019, it had a population of 1,301,659, across 194 communes.