Châteaugiron

Châteaugiron Chaujon (Gallo) Kastell-Geron (Breton)
Commune
Castle of Châteaugiron
Flag Coat of arms
Location of Châteaugiron
Châteaugiron Location within France Châteaugiron Location within Brittany
Coordinates: 48°02′56″N 1°30′07″W
Country	France
Region	Brittany
Department	Ille-et-Vilaine
Arrondissement	Rennes
Canton	Châteaugiron
Intercommunality	Pays de Châteaugiron
Government
• Mayor (2020–2026)	Yves Renault
Area 1	23.52 km2 (9.08 sq mi)
Population  (2023)	10,845
• Density	461.1/km2 (1,194/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
INSEE/Postal code	35069 /35410
Elevation	28–78 m (92–256 ft)
1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.

Châteaugiron (French: [ʃɑtoʒiʁɔ̃]; Breton: Kastell-Geron; Gallo: Chaujon) is a commune in the Ille-et-Vilaine department of Brittany in northwestern France. It extended on 1 January 2017 by merging with the former communes of Saint-Aubin-du-Pavail and Ossé. Châteaugiron castle dates from the 12th century, and now houses the town hall. Its oldest part is the apse of the chapel; the keep dates from the 13th-14th century.

Population

Inhabitants of Châteaugiron are called Castelgironnais and Castelgironnaises in French. Population data given in the table and graph below refer to the area corresponding with the commune as of January 2025.

Historical population Year Pop. ±% p.a. 1968 2,802 —     1975 3,061 +1.27% 1982 4,316 +5.03% 1990 5,368 +2.76% 1999 6,863 +2.77% 2007 8,221 +2.28% 2012 8,928 +1.66% 2017 9,966 +2.22% 2023 10,845 +1.42% Source: INSEE

Sister cities

• Puszczykowo, Poland

Gallery

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  Town hall
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See also

• Communes of the Ille-et-Vilaine department

External links

• Official website (in French)
• Base Mérimée: Search for heritage in the commune, Ministère français de la Culture. (in French)
• Mayors of Ille-et-Vilaine Association Archived 14 January 2012 at the Wayback Machine (in French)