Adstock is a municipality in the Les Appalaches Regional County Municipality in the Chaudière-Appalaches region of Quebec, Canada. Its population in the Canada 2021 Census was 2,903.^[2][3]

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Adstock
Municipality
Mont Adstock
Location within Les Appalaches RCM
Adstock Location in province of Quebec
Coordinates: 46°03′N 71°05′W[1]
Country	Canada
Province	Quebec
Region	Chaudière-Appalaches
RCM	Les Appalaches
Constituted	October 24, 2001
Named for	Adstock[1]
Government [2]
• Mayor	Pascal Binet
• Federal riding	Mégantic—L'Érable
• Prov. riding	Lotbinière-Frontenac
Area [2]
• Total	306.19 km2 (118.22 sq mi)
• Land	290.03 km2 (111.98 sq mi)
Population  (2021)[3]
• Total	2,903
• Density	10/km2 (30/sq mi)
• Pop 2016–2021	3.5%
• Dwellings	1,767
Time zone	UTC−5 (EST)
• Summer (DST)	UTC−4 (EDT)
Postal code(s)	G0N 1S0
Area codes	418 and 581
Highways	R-267 R-269
Website	www.adstock.ca

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Adstock was created on February 14, 2001, after the amalgamation of Saint-Méthode-de-Frontenac and Sacré-Coeur-de-Marie-Partie-Sud. On October 24, 2001, Sainte-Anne-du-Lac joined the new municipality.^[4]

Adstock was named after the township in which the former municipality of Saint-Méthode-de-Frontenac lies. The township was itself named after the village of Adstock in Buckinghamshire, England.^{[citation needed]}