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Lagny-sur-Marne
Lagny-sur-Marne
Commune
	The town hall of Lagny-sur-Marne
	Coat of arms
	Location (in red) within Paris inner and outer suburbs
	Location of Lagny-sur-Marne
	Lagny-sur-Marne Lagny-sur-Marne
	Coordinates: 48°52′44″N 2°42′27″E / 48.8788°N 2.7075°E
Country	France
Region	Île-de-France
Department	Seine-et-Marne
Arrondissement	Torcy
Canton	Lagny-sur-Marne
Intercommunality	Marne et Gondoire
Government
• Mayor (2020–2026)	Jean-Paul Michel
Area 1	5.72 km2 (2.21 sq mi)
Population (2022)	21,433
• Density	3,700/km2 (9,700/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
INSEE/Postal code	77243 /77400
Elevation	37–112 m (121–367 ft) ; (avg. 44 m or 144 ft)
	1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.

Lagny-sur-Marne (French pronunciation: [laɲi syʁ maʁn] ^ⓘ, literally Lagny on Marne) is a commune in the eastern suburbs of Paris, France. It is located in the Seine-et-Marne department in Île-de-France 26.1 km (16.2 mi) from the centre of Paris (20 minutes away from the centre of Paris).

The commune of Lagny-sur-Marne is part of the Val de Bussy sector, one of the four sectors in the "new town" of Marne-la-Vallée.

History

From 644, Lagny-sur-Marne was the site of Lagny Abbey, a monastery founded that year, and after its destruction by the Normans refounded about 990. The monastery was seized by the state at the French Revolution and its buildings are used since 1842 as the offices of the municipality.

During the Middle Ages Lagny-sur-Marne was one of the most popular places for tourneys in Northern France. In November 1179 a notable tournament was held by Louis VII of France in honour of the coronation of his son.

In 1170, the young knight Baldwin of Bethune and his lifelong friend, William Marshal were at the court of Henry the Young King.^[3] In 1180 at the great international tournament of Lagny, Baldwin was a knight banneret, leading the Flemish team while William headed the English team.

In 1846, Lagny-sur-Marne annexed the commune of Saint-Denis-du-Port.

Demographics

Inhabitants are called Latignaciens or Laniaques.

Historical population

Year	Pop.	±% p.a.
1793	1,607	—
1800	1,745	+1.18%
1806	1,786	+0.39%
1821	1,753	−0.12%
1831	1,869	+0.64%
1836	2,029	+1.66%
1841	2,212	+1.74%
1846	2,407	+1.70%
1851	2,716	+2.44%
1856	2,817	+0.73%
1861	3,458	+4.19%
1866	3,988	+2.89%
1872	3,999	+0.05%
1876	4,272	+1.66%
1881	4,621	+1.58%
1886	4,990	+1.55%
1891	4,998	+0.03%
1896	5,341	+1.34%

Year	Pop.	±% p.a.
1901	5,442	+0.38%
1906	5,560	+0.43%
1911	5,880	+1.13%
1921	6,302	+0.70%
1926	6,936	+1.94%
1931	7,642	+1.96%
1936	8,310	+1.69%
1946	7,960	−0.43%
1954	8,982	+1.52%
1962	11,945	+3.63%
1968	15,743	+4.71%
1975	16,465	+0.64%
1982	17,959	+1.25%
1990	18,643	+0.47%
1999	19,368	+0.42%
2007	20,401	+0.65%
2012	20,328	−0.07%
2017	21,356	+0.99%

Source: EHESS^[4] and INSEE (1968–2017)^[5]

Economy

When video game company Titus Interactive was active, its head office was in Lagny-sur-Marne.^[6]

Transport

Lagny-sur-Marne is served by the Lagny – Thorigny station, on the Transilien Paris – Est suburban rail line. The station, although administratively located in neighbouring commune of Thorigny-sur-Marne, is immediately across the river Marne from the centre of Lagny-sur-Marne.

Education

The commune has ten preschools and nine elementary schools.^[7] There are two junior high schools, Collège Les 4 Arpents and Collège Marcel Rivière, as well as one senior high school/sixth-form college, Lycée Van Dongen.^[8]

Twin towns

Lagny-sur-Marne is twinned with Sainte-Agathe-des-Monts, Quebec in Canada since 1969, and also with Alnwick, Northumberland in the United Kingdom.

Notable residents

Christopher Jullien (born 1993), footballer
Paul Pogba (born 1993), footballer
Christopher Nkunku (born 1997), footballer
Benjamin Boukpeti (born 1981), Togolese canoeist who won a bronze medal in the 2008 Summer Olympics, which was Togo's first ever Olympic medal.
Valéry Aubertin (born 1970), the organist and composer, was born in Lagny-sur-Marne
Édouard Cortès (1882–1969), Post-Impressionist painter
Salomé Saqué (born 1995), journalist and writer

References

^ "Répertoire national des élus: les maires" (in French). data.gouv.fr, Plateforme ouverte des données publiques françaises. 13 September 2022.
^ "Populations de référence 2022" (in French). The National Institute of Statistics and Economic Studies. 19 December 2024.
^ Paul Meyer, ‘’L'histoire de Guillaume le Maréchal, Comte de Striguil et de Pembroke, Régent d'Angleterre de 1216 à 1219’’, Laurens, Paris, 1891.
^ Des villages de Cassini aux communes d'aujourd'hui: Commune data sheet Lagny-sur-Marne, EHESS (in French).
^ Population en historique depuis 1968, INSEE
^ "Contact." Titus Interactive. 3 June 2004. Retrieved on 4 September 2012. "Titus Interactive SA : Parc de l'Esplanade 12, rue Enrico Fermi 77462 Lagny sur Marne Cedex. FRANCE"
^ "Maternelle et élémentaire Archived 2016-09-16 at the Wayback Machine." Lagny-sur-Marne. Retrieved on September 3, 2016.
^ "Collèges et lycées Archived 2016-09-16 at the Wayback Machine." Lagny-sur-Marne. Retrieved on September 3, 2016.