Overview
Hauts-de-Seine is a département in the Île-de-France region of France. It covers Paris's western inner suburbs. It is bordered by Paris, Seine-Saint-Denis and Val-de-Marne to the east, Val-d'Oise to the north, Yvelines to the west and Essonne to the south. With a population of 1,624,357 (as of 2019) and a total area of 176 square kilometres (68 square miles), it is the second most highly-densely populated department of France, after Paris. It is the fifth most populous department in France. Its prefecture is Nanterre, but Boulogne-Billancourt, one of its two subprefectures, alongside Antony, has a larger population.
Hauts-de-Seine is best known for containing the modern office, cinema and shopping complex La Défense, one of Grand Paris's main economic centres and one of Europe's major business districts. Hauts-de-Seine is one of the wealthiest departments in France; it had the highest GDP per capita in France at €107,800 in 2020. Its inhabitants are called Altoséquanais (masculine) and Altoséquanaises (feminine) in French.
History
From 1790 to 1968, Hauts-de-Seine was part of the former department of Seine.
The Hauts-de-Seine department was created in 1968, from parts of the former departments of Seine and Seine-et-Oise. Its creation reflected the implementation of a law passed in 1964; Nanterre had already been selected as the prefecture for the new department early in 1965.
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