- Number: 92
- Population: 1,381,169 (1990)
- Area: 175.6 km²
- Préfecture: Nanterre[?]
- Sous-Préfectures: Antony[?], Boulogne-Billancourt
- Communes: 36
It is small and densely populated and contains the modern office, theatre, and shopping complex known as La Défense with its modern Grande Arche.
Hauts-de-Seine was largely part of the Seine département until 1968. It and two other small départements, Seine-Saint-Denis and Val-de-Marne, form a ring around Paris, known as the petite couronne.