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Commune in Pays de la Loire, France
Derval
Derva (Gallo)
Derwal (Breton)
Commune
👁 Town hall
Town hall
Location of Derval
Coordinates: 47°40′06″N 1°40′12″W / 47.6683°N 1.67°W / 47.6683; -1.67
CountryFrance
RegionPays de la Loire
DepartmentLoire-Atlantique
ArrondissementChâteaubriant-Ancenis
CantonGuémené-Penfao
IntercommunalityChâteaubriant-Derval
Government
 • Mayor (2020–2026) Dominique David[1]
Area
1
63.51 km2 (24.52 sq mi)
Population
(2023)[2]
3,601
 • Density56.70/km2 (146.9/sq mi)
Time zoneUTC+01:00 (CET)
 • Summer (DST)UTC+02:00 (CEST)
INSEE/Postal code
44051 /44590
Elevation8–77 m (26–253 ft)
1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.

Derval (French pronunciation: [dɛʁval] ; Gallo: Derva, Breton: Derwal) is a commune in the Loire-Atlantique department in western France.

Geography

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The river Chère forms all of the commune's northern border.

Population

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Historical population
YearPop.±% p.a.
1793 1,750—    
1821 1,936+0.36%
1846 2,309+0.71%
1872 2,968+0.97%
1901 3,329+0.40%
1926 3,226−0.13%
1946 2,859−0.60%
1962 2,702−0.35%
1968 2,675−0.17%
YearPop.±% p.a.
1975 2,591−0.45%
1982 2,558−0.18%
1990 2,558+0.00%
1999 2,491−0.29%
2007 2,919+2.00%
2012 3,422+3.23%
2017 3,489+0.39%
2023 3,601+0.53%
Source: EHESS[3] and INSEE (1968-2023)[4]

International relations

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Derval is twinned with Llanidloes, a small town in Wales.

Architecture

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The castle, also known as the Saint-Clair Tower, is an ancient fortified castle, the remains of which stand in the woods, 2.5 kilometers north-northeast of the town. The building was first partially registered as a historic monument by decree of July 16, 1925 by the French Ministry of Culture, to protect the Saint-Clair tower. In November 2021, protection was extended to the entire site, both built and unbuilt parts, in order to protect the surrounding area, the moats and the buried remains.[5]

See also

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References

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  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. ^ Des villages de Cassini aux communes d'aujourd'hui: Commune data sheet Derval, EHESS (in French).
  4. ^ Population municipale entre 1968 et 2023, INSEE
  5. ^ "Château Tour Saint-Clair". Patrimoine architectural (Mérimée) - Monuments historiques (in French). Ministry of Culture (France). 17 July 2023. Retrieved 26 October 2025.
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