Saint-Théophile is a municipality in the Municipalité régionale de comté de Beauce-Sartigan in Quebec, Canada on the Canada–United States border. It is part of the Chaudière-Appalaches region and the population is 702 as of 2021. It is named after reverend Théophile Montminy, who had been chosen by the archdiocese to find a proper location for a church.

Saint-Théophile
Municipality
Location within Beauce-Sartigan RCM.
Saint-Théophile Location in southern Quebec.
Coordinates: 45°56′N 70°29′W[1]
Country	Canada
Province	Quebec
Region	Chaudière-Appalaches
RCM	Beauce-Sartigan
Constituted	June 28, 1975
Government [2]
• Mayor	Roland Boucher
• Federal riding	Beauce
• Prov. riding	Beauce-Sud
Area [2][3]
• Total	436.90 km2 (168.69 sq mi)
• Land	427.78 km2 (165.17 sq mi)
Population  (2021)[3]
• Total	702
• Density	1.6/km2 (4/sq mi)
• Pop 2016-2021	1.5%
• Dwellings	354
Time zone	UTC−5 (EST)
• Summer (DST)	UTC−4 (EDT)
Postal code(s)	G0M 2A0
Area code(s)	418 and 581
Highways	Route 173 Route 269
Website	www.sainttheophile.qc.ca

Saint-Théophile lies next to the border with Maine, and there is a border crossing on Route 173 within the municipality, in the hamlet of Armstrong. The Armstrong custom office is the third in importance in Quebec.

References

• Commission de toponymie du Québec
• Ministère des Affaires municipales, des Régions et de l'Occupation du territoire