|Coordinates: 48°50′N02°12′E / 48.833°N 2.200°E Coordinates: 48°50′N02°12′E / 48.833°N 2.200°E|
|Subprefectures|| Antony |
|• President of the Departmental Council||Georges Siffredi  (LR)|
|• Total||176 km2 (68 sq mi)|
(Jan. 2019) 
|• Density||9,200/km2 (24,000/sq mi)|
|Time zone||UTC+1 (CET)|
|• Summer (DST)||UTC+2 (CEST)|
|^1 French Land Register data, which exclude estuaries and lakes, ponds and glaciers larger than 1 km2|
Hauts-de-Seine (French pronunciation: [o d(ə) sɛn] ( listen ); lit. 'Upper 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 although 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 has the second highest GDP per capita in France at €106,800 in 2020.  Its inhabitants are called Altoséquanais (masculine) and Altoséquanaises (feminine) in French.
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.
In 2016, the Departmental Council of Hauts-de-Seine voted in favour of a fusion of Hauts-de-Seine and Yvelines, its western neighbour. Following a similar vote in Yvelines, an établissement public interdépartemental was established.  The fusion project was abandoned in 2021, but the cooperation between the two departments continues. 
|Sources:  |
|Born in metropolitan France||Born outside metropolitan France|
|Born in foreign countries with French citizenship at birth1||EU-15 immigrants2||Non-EU-15 immigrants|
|1 This group is made up largely of former French settlers, such as Pieds-Noirs in Northwest Africa, followed by former colonial citizens who had French citizenship at birth (such as was often the case for the native elite in French colonies), as well as to a lesser extent foreign-born children of French expatriates. Note that a foreign country is understood as a country not part of France in 1999, so a person born for example in 1950 in Algeria, when Algeria was an integral part of France, is nonetheless listed as a person born in a foreign country in French statistics.|
2 An immigrant is a person born in a foreign country not having French citizenship at birth. Note that an immigrant may have acquired French citizenship since moving to France, but is still considered an immigrant in French statistics. On the other hand, persons born in France with foreign citizenship (the children of immigrants) are not listed as immigrants.
Hauts-de-Seine and two other small departments (Seine-Saint-Denis and Val-de-Marne) form an inner ring around Paris, known as the Petite Couronne (literal translation: "Little Crown"). Together with the City of Paris, they are included in Greater Paris since 1 January 2016. It is the Smallest Department in France followed by Seine-Saint-Denis and Val-de-Marne. It is slightly smaller than Maldives. The whole of the department is a salient which is looks like Warwickshire in England, within the districts of North Warwickshire, Nuneaton and Bedworth, and Rugby.
Hauts-de-Seine comprises three departmental arrondissements and 36 communes:
|Map number||Name||Area (km2)||Population (2019) ||Coat of arms||Arrondissement||Map||Labelled map|
Hauts-de-Seine is one of France's wealthiest departments and one of Europe's richest areas. Its GDP per capita was €106,800 in 2020, according to Eurostat official figures. 
In the 1990s and early 2000s, Hauts-de-Seine received national media attention as the result of a corruption scandal concerning the misuse of public funds provided for the department's housing projects. Implicated were former minister and departmental council president Charles Pasqua, as well as other personalities of the Rally for the Republic (RPR) party.
Hauts-de-Seine was the political base of Nicolas Sarkozy, President of the French Republic from 2007 to 2012. He was Mayor of Neuilly-sur-Seine (1983–2002) and President of the Departmental Council of Hauts-de-Seine (2004–2007) before he assumed the office. Sarkozy succeeded Pasqua as President of the Departmental Council. 
Hauts-de-Seine is governed by a departmental council. Its 46 members are called departmental councillors. The electorate of Hauts-de-Seine usually votes for right-wing parties; there has never been a left-wing majority since the department's inception in 1968.
The departmental council is the deliberative organ of the department. The executive is led by the council president, assisted by vice presidents, in charge of various portfolios. Departmental councillors are elected (two per canton) by the department's inhabitants for six-year terms (no term limits). The president of the Departmental Council is Georges Siffredi, elected in 2020.
|Election||Winning Candidate||Party||%||2nd Place Candidate||Party||%|
|2022 ||Emmanuel Macron||LREM||80.39||Marine Le Pen||FN||19.61|
|2017 ||Emmanuel Macron||LREM||85.65||Marine Le Pen||FN||14.35|
|2012||Nicolas Sarkozy||UMP||50.52||François Hollande||PS||49.48|
|2007||Nicolas Sarkozy||UMP||55.65||Ségolène Royal||PS||44.35|
|2002 ||Jacques Chirac||RPR||87.99||Jean-Marie Le Pen||FN||12.01|
|1995 ||Jacques Chirac||RPR||57.25||Lionel Jospin||PS||42.75|
Hauts-de-Seine elected the following members of the National Assembly in the 2017 legislative election:
|Hauts-de-Seine's 1st constituency||Elsa Faucillon||French Communist Party|
|Hauts-de-Seine's 2nd constituency||Adrien Taquet||La République En Marche!|
|Hauts-de-Seine's 3rd constituency||Christine Hennion||La République En Marche!|
|Hauts-de-Seine's 4th constituency||Isabelle Florennes||La République En Marche!|
|Hauts-de-Seine's 5th constituency||Céline Calvez||La République En Marche!|
|Hauts-de-Seine's 6th constituency||Constance Le Grip||The Republicans|
|Hauts-de-Seine's 7th constituency||Jacques Marilossian||La République En Marche!|
|Hauts-de-Seine's 8th constituency||Jacques Maire||La République En Marche!|
|Hauts-de-Seine's 9th constituency||Thierry Solère||The Republicans|
|Hauts-de-Seine's 10th constituency||Florence Provendier||La République En Marche!|
|Hauts-de-Seine's 11th constituency||Laurianne Rossi||La République En Marche!|
|Hauts-de-Seine's 12th constituency||Jean-Louis Bourlanges||Democratic Movement|
|Hauts-de-Seine's 13th constituency||Frédérique Dumas||La République En Marche!|
In the Senate, Hauts-de-Seine is represented by:
Nord is a département in Hauts-de-France region, France bordering Belgium. It was created from the western halves of the historical counties of Flanders and Hainaut, and the Bishopric of Cambrai. The modern coat of arms was inherited from the County of Flanders.
Somme is a department of France, located in the north of the country and named after the Somme river. It is part of the Hauts-de-France region. It had a population of 570,559 in 2019.
Aisne is a French department in the Hauts-de-France region of northern France. It is named after the river Aisne. In 2019, it had a population of 531,345.
Seine-Maritime is a department of France in the Normandy region of northern France. It is situated on the northern coast of France, at the mouth of the Seine, and includes the cities of Rouen and Le Havre. Until 1955 it was named Seine-Inférieure. It had a population of 1,255,633 in 2019.
Marne is a département in the Grand Est region of France. It is named after the river Marne which flows through it. The prefecture (capital) of Marne is Châlons-en-Champagne. The subprefectures are Épernay, Reims, and Vitry-le-François. It had a population of 566,855 in 2019.
Haute-Marne is a department in the Grand Est region of Northeastern France. Named after the river Marne, its prefecture is Chaumont. In 2019, it had a population of 172,512.
Yvelines is a department in the western part of the Île-de-France region in Northern France. In 2019, it had a population of 1,448,207. Its prefecture is Versailles, home to the Palace of Versailles, the principal residence of the King of France from 1682 until 1789, a UNESCO World Heritage Site since 1979. Yvelines' subprefectures are Saint-Germain-en-Laye, Mantes-la-Jolie and Rambouillet.
Eure is a department in Normandy in Northwestern France, named after the river Eure. Its prefecture is Évreux. In 2019, Eure had a population of 599,507.
Oise is a department in the north of France. It is named after the river Oise. Inhabitants of the department are called Oisiens or Isariens, after the Latin name for the river, Isara. It had a population of 829,419 in 2019.
Sarthe is a department of the French region of Pays de la Loire, and the province of Maine, situated in the Grand-Ouest of the country. It is named after the river Sarthe, which flows from east of Le Mans to just north of Angers. It had a population of 566,412 in 2019.
Seine-et-Marne is a department in the Île-de-France region in Northern France. Named after the rivers Seine and Marne, it is the region's largest department with an area of 5,915 square kilometres ; it roughly covers its eastern half. In 2019, it had a population of 1,421,197. Its prefecture is Melun, although both Meaux and Chelles have larger populations.
Essonne is a département of France in the southern Île-de-France region. It is named after the river Essonne. In 2019, it had a population of 1,301,659 across 194 communes.
Seine-Saint-Denis is a department of France located in the Grand Paris metropolis in the Île-de-France region. In French, it is often referred to colloquially as quatre-vingt treize or neuf trois, after its official administrative number, 93. Its prefecture is Bobigny.
Val-de-Marne is a department of France located in the Île-de-France region. Named after the river Marne, it is situated in the Grand Paris metropolis to the southeast of the City of Paris. In 2019, Val-de-Marne had a population of 1,407,124.
Val-d'Oise is a department in the Île-de-France region, Northern France. It was created in 1968 following the split of the Seine-et-Oise department. In 2019, Val-d'Oise had a population of 1,249,674.
The Territoire de Belfort is a department in the Bourgogne-Franche-Comté region, eastern France. It had a population of 141,318 in 2019.
Seine-et-Oise was the former department of France encompassing the western, northern and southern parts of the metropolitan area of Paris. Its prefecture was Versailles and its administrative number was 78. Seine-et-Oise was disbanded in 1968 as part of the reorganisation of the departments of the Paris metropolitan area. The newly-created Yvelines department inherited the 78 number.
The Île-de-France is the most populous of the eighteen regions of France. Centred on the capital Paris, it is located in the north-central part of the country and often called the Paris Region. Île-de-France is densely populated and retains a prime economic position on the national stage: though it covers only 12,012 square kilometres, about 2% of metropolitan French territory, its 2017 population was nearly one-fifth of the national total.
The arrondissement of Boulogne-Billancourt is an arrondissement of France in the Hauts-de-Seine department in the Île-de-France region. It has 8 communes. Its population is 320,461 (2019), and its area is 36.5 km2 (14.1 sq mi).
Stéphanie Do is a French politician and a member of La République En Marche!. She was elected to the French National Assembly on 18 June 2017, representing the 10th constituency of department of Seine-et-Marne, under the investiture of La République En Marche. Do holds a position in the Bureau of the National Assembly of the 15th legislature of the French Fifth Republic as a secretary.