Saint-Guillaume
Municipality
Location within Drummond RCM.
Saint-Guillaume Location in southern Quebec.
Coordinates: 45°53′N 72°46′W / 45.883°N 72.767°W / 45.883; -72.767[1]
Country	Canada
Province	Quebec
Region	Centre-du-Québec
RCM	Drummond
Constituted	November 8, 1995
Government [2][3]
• Mayor	Robert Julien
• Federal riding	Drummond
• Prov. riding	Nicolet-Bécancour
Area [2][4]
• Total	88.30 km2 (34.09 sq mi)
• Land	87.91 km2 (33.94 sq mi)
Population  (2021)[4]
• Total	1,491
• Density	17.0/km2 (44/sq mi)
• Pop 2016-2021	1.0%
• Dwellings	700
Demonym	Guillaumien
Time zone	UTC−5 (EST)
• Summer (DST)	UTC−4 (EDT)
Postal code(s)	J0C 1L0
Area code	819
Highways	R-122 R-224 R-239
Website	www.municipalite-st-guillaume.qc.ca

Saint-Guillaume (French pronunciation: [sɛ̃ ɡijom]) is a municipality in the Centre-du-Québec region of southwestern Quebec. The population as of the Canada 2021 Census was 1,491.

Population Population trend:^[5]

Census	Population	Change (%)
2021	1,491	1.0%
2016	1,476	4.6%
2011	1,547	2.0%
2006	1,578	0.2%
2001	1,575	1.4%
1996	1,598	N/A

Language Mother tongue language (2021)^[6]

• List of municipalities in Quebec