Boulogne-Billancourt
French commune in Hauts-de-Seine, Île-de-France
Boulogne-Billancourt (French: [bulɔɲ bijɑ̃kuʁ] ; often colloquially simply Boulogne, until 1924 officially Boulogne-sur-Seine, [bulɔɲ syʁ sɛn], lit. 'Boulogne-on-Seine') is a commune in the western inner suburbs of Paris, France, located 8.2 km (5 mi) from the centre of Paris at Notre Dame. It is a subprefecture of the Hauts-de-Seine department and thus the seat of the larger arrondissement of Boulogne-Billancourt. It is also part of the Métropole du Grand Paris. Boulogne-Billancourt includes one island in the Seine: Île Seguin.
Boulogne-Billancourt is one of the wealthiest regions in the Parisian area and in France. Formerly an important industrial site, it has successfully reconverted into business services and is now home to major communication companies headquartered in the Val de Seine business district.
Etymology
The original name of the commune was Boulogne-sur-Seine (meaning "Boulogne upon Seine").
Before the 14th century, Boulogne was a small village called Menuls-lès-Saint-Cloud (meaning "Menuls near Saint-Cloud"). In the beginning of the 14th century, King Philip IV of France ordered the building in Menuls-lès-Saint-Cloud of a church dedicated to the virgin of the sanctuary of Boulogne-sur-Mer, then a famous pilgrimage centre in northern France.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 13, 2026. The linked authority identifier is Q172455. VIAF identifies the subject as 130195382. The Library of Congress control number is n81071974. Authority coordinates are 48.835, 2.241. 4 of 4 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1924.
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This entry incorporates text from “Boulogne-Billancourt” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.