Location (in red) within Paris inner and outer suburbs
|Intercommunality||CA Val Parisis|
|• Mayor (2008–2020)||Sébastien Meurant|
|5.24 km2 (2.02 sq mi)|
|• Density||3,000/km2 (7,800/sq mi)|
|Time zone||UTC+01:00 (CET)|
|• Summer (DST)||UTC+02:00 (CEST)|
|Elevation||57–191 m (187–627 ft)|
|1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.|
In 1806 the commune of Saint-Leu-la-Forêt merged with the neighboring commune of Taverny, resulting in the creation of the commune of Saint-Leu-Taverny.
In 1821 the commune of Saint-Leu-Taverny was demerged. Thus, Saint-Leu-la-Forêt and Taverny were both restored as separate communes.
- Louis Bonaparte brother to Napoleon I and father to Napoleon III, is buried at Saint-Leu-la-Forêt.
- Wanda Landowska her home in Saint-Leu-la-Forêt became a center for the performance and study of early music, particularly of the Renaissance and Baroque eras.
- Eyvind Johnson lived rue de Boissy, from 1926 to 1930.
- Sylvie Oussenko (born in 1945), singer mezzo-soprano and writer was born in Saint-Leu-la-Forêt.
- In Patrick Modiano's book, So You Don't Get Lost in the Neighborhood, the narrator spends part of his childhood in the care of a teenage girl living in a mysterious house in Saint-Leu-la-Forêt.