Les Ulis
| Les Ulis | |
|---|---|
| Médiathèque François Mitterrand | |
| Location (in red) within Paris inner and outer suburbs | |
| Location of Les Ulis | |
| Coordinates: 48°40′56″N 2°10′11″E / 48.6822°N 2.1698°E | |
| Country | France | 
| Region | Île-de-France | 
| Department | Essonne | 
| Arrondissement | Palaiseau | 
| Canton | Les Ulis | 
| Intercommunality | CA Paris-Saclay | 
| Government | |
| • Mayor (2020–2026) | Clovis Cassan | 
| Area 1 | 5.18 km2 (2.00 sq mi) | 
| Population  (2022) | 25,633 | 
| • Density | 4,900/km2 (13,000/sq mi) | 
| Demonym | Ulissiens | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| INSEE/Postal code | 91692 /91940 | 
| Elevation | 87–170 m (285–558 ft) (avg. 155 m or 509 ft) | 
| 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. | |
Les Ulis (French pronunciation: [lez‿ylis] ⓘ) is a commune in the Essonne department, 23 km (14 mi) from the centre of Paris, France. A planned community, it comprises outer suburbs (banlieues) built in the 1970s on the southwestern edge of the Paris metropolitan area. In 2022, it had a population of 25,633.