Longuenesse (French pronunciation: [lɔ̃ɡnɛs]; West Flemish: Langenesse) is a commune in the Pas-de-Calais department in the Hauts-de-France region of France.^[3] It is a suburb of Saint-Omer, one mile southwest of the centre.

Key Information

Longuenesse Langenesse
Commune
The town hall of Longuenesse
Coat of arms
Location of Longuenesse
Longuenesse Show map of France Longuenesse Show map of Hauts-de-France
Coordinates: 50°44′11″N 2°14′18″E / 50.7364°N 2.2383°E / 50.7364; 2.2383
Country	France
Region	Hauts-de-France
Department	Pas-de-Calais
Arrondissement	Saint-Omer
Canton	Longuenesse
Intercommunality	Pays de Saint-Omer
Government
• Mayor (2020–2026)	Christian Coupez[1]
Area 1	8.4 km2 (3.2 sq mi)
Population  (2023)[2]	10,548
• Density	1,300/km2 (3,300/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
INSEE/Postal code	62525 /62219
Elevation	3–79 m (9.8–259.2 ft) (avg. 75 m or 246 ft)
1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.
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Historical population Year Pop. ±% p.a. 1968 4,794 —     1975 9,397 +10.09% 1982 11,970 +3.52% 1990 12,604 +0.65% 1999 12,518 −0.08% 2007 11,120 −1.47% 2012 11,108 −0.02% 2017 11,023 −0.15% 2023 10,548 −0.73% Source: INSEE[4]

1. ^ "Répertoire national des élus: les maires" (in French). data.gouv.fr, Plateforme ouverte des données publiques françaises. 13 September 2022.
2. ^ "Populations de référence 2023" (in French). National Institute of Statistics and Economic Studies. 18 December 2025.
3. ^ INSEE commune file
4. ^ Population municipale entre 1968 et 2023, INSEE

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