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Porte de France
Porte de France
Coat of arms of Longwy
Coat of arms
Longwy is located in France
Coordinates: 49°31′12″N 5°45′38″E / 49.52°N 5.7606°E / 49.52; 5.7606Coordinates: 49°31′12″N 5°45′38″E / 49.52°N 5.7606°E / 49.52; 5.7606
Country France
Region Grand Est
Department Meurthe-et-Moselle
Arrondissement Briey
Canton Longwy
Intercommunality Longwy
 • Mayor (2008–2014) Édouard Jacque (PR)
Area1 5.34 km2 (2.06 sq mi)
Population (1999)2 14,521
 • Density 2,700/km2 (7,000/sq mi)
Time zone CET (UTC+1)
 • Summer (DST) CEST (UTC+2)
INSEE/Postal code 54323 /54400
Elevation 250–396 m (820–1,299 ft)
(avg. 254 m or 833 ft)
Website mairie-longwy.fr

1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km² (0.386 sq mi or 247 acres) and river estuaries.

2 Population without double counting: residents of multiple communes (e.g., students and military personnel) only counted once.

Longwy (French pronunciation: ​[lɔ̃wi]; German: Langich, Luxembourgish: Longkech) is a commune in the Meurthe-et-Moselle department in northeastern France.

The inhabitants are known as Longoviciens.


Longwy has historically been an industrial center of the Lorraine iron mining district. The town is known for its artistic glazed pottery.


Longwy initially belonged to Lotharingia. After the division of that kingdom, the town became part of Upper Lorraine and ultimately the Duchy of Bar. Longwy was ceded to Wenceslaus I of Luxembourg in 1368, but was returned to Bar in 1378. The Duchy of Bar was then annexed into the Duchy of Lorraine in 1480.

From 1648 to 1660 Longwy was part of the Kingdom of France, returning to the Duchy of Lorraine afterwards. It was made part of France again in 1670, a situation which was finalized in the Treaties of Nijmegen in 1678. Vauban fortified the town during the reign of Louis XIV.

After the French defeat in the Franco-Prussian War of 1870–71, almost all of the Moselle department, along with Alsace and portions of the Meurthe and Vosges departments, was ceded to the German Empire by the Treaty of Frankfurt on the ground that the population in those areas spoke German dialects. Only one-fifth of Moselle, including Longwy, was spared annexation. Otto von Bismarck later bitterly regretted his decision when it was discovered that the region of Briey and Longwy was rich with iron ore.


The French puppeteer François Dominique Séraphin (1747–1800) was born in Longwy as well as the Luxembourgish painter Jean-Baptiste Fresez (1800–1867) and Holy Roman Empire Field Marshal Count Claude Florimond de Mercy (1666–1734.) In 2008, the ville neuve ("New Town"), was listed as a UNESCO World Heritage Site, as part of the "Fortifications of Vauban" group.

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