Lagny-sur-Marne

Lagny-sur-Marne
The town hall of Lagny-sur-Marne
Coat of arms
Location (in red) within Paris inner and outer suburbs
Coordinates: 48°52′44″N 2°42′27″E / 48.8788°N 2.7075°E / 48.8788; 2.7075Coordinates: 48°52′44″N 2°42′27″E / 48.8788°N 2.7075°E / 48.8788; 2.7075
Country	France
Region	Île-de-France
Department	Seine-et-Marne
Arrondissement	Torcy
Canton	Lagny-sur-Marne
Intercommunality	Marne et Gondoire
Government
• Mayor (2014–2020)	Jean-Paul Michel
Area1	5.72 km2 (2.21 sq mi)
Population (2013)2	20,718
• Density	3,600/km2 (9,400/sq mi)
Time zone	CET (UTC+1)
• Summer (DST)	CEST (UTC+2)
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. 2Population without double counting: residents of multiple communes (e.g., students and military personnel) only counted once.

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 (pronounced: [laɲi syʁ maʁn]; English: Lagny on the Marne) is a commune in the eastern suburbs of Paris, France. It is located in the Seine-et-Marne department in the Île-de-France 26.1 km (16.2 mi) from the center 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.

During the Middle Ages Lagny-sur-Marne was a popular place 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. Later in 1846, Lagny-sur-Marne annexed the commune of Saint-Denis-du-Port.

Inhabitants are called Latignaciens or Laniaques.

When Titus Interactive was active, its head office was in Lagny-sur-Marne.

Lagny-sur-Marne is served by Lagny – Thorigny station on the Transilien Paris – Est suburban rail line. This station, although administratively located on the territory of the neighboring commune of Thorigny-sur-Marne, lies immediately across the Marne River from the town center of Lagny-sur-marne.

The commune has ten preschools and nine elementary schools. 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.