A few facts about Les Ulis
- About 26,000 people live in Les Ulis.
- It's part of Île-de-France.
- Paris, the largest city in France, is about 23 km away.
- For a bigger city, Versailles is about 14 km away.
- Towns nearby: Palaiseau (7 km), Sainte-Geneviève-des-Bois (12 km) and Savigny-sur-Orge (13 km).