Saint-Marc-sur-Richelieu
Municipality
Road 223 in Saint-Marc-sur-Richelieu
Location within La Vallée-du-Richelieu RCM.
Saint-Marc-sur-Richelieu Location in southern Quebec.
Coordinates (<): 45°41′N 73°12′W / 45.683°N 73.200°W / 45.683; -73.200[1]
Country	Canada
Province	Quebec
Region	Montérégie
RCM	La Vallée-du-Richelieu
Constituted	July 1, 1855
Government [2][3]
• Mayor	Alain Lavallée
• Federal riding	Pierre-Boucher—Les Patriotes—Verchères
• Prov. riding	Borduas
Area [2][4]
• Total	62.40 km2 (24.09 sq mi)
• Land	60.92 km2 (23.52 sq mi)
Population  (2021)[4]
• Total	2,245
• Density	36.9/km2 (96/sq mi)
• Pop 2016-2021	3.4%
• Dwellings	908
Time zone	UTC−5 (EST)
• Summer (DST)	UTC−4 (EDT)
Postal code(s)	J0L 2E0
Area code(s)	450 and 579
Highways	R-223
Website	www.ville.saint-marc- sur-richelieu.qc.ca

Saint-Marc-sur-Richelieu (French pronunciation: [sɛ̃ maʁk syʁ ʁiʃ(ə)ljø], lit. 'Saint-Marc on Richelieu') is a municipality in southwestern Quebec, Canada, on the Richelieu River in the Regional County Municipality of La Vallée-du-Richelieu. The population as of the Canada 2021 Census was 2,245.

In its origin, the municipality was simply named: Saint-Marc. In 1921, the municipality lost an important part of its territory for the creation of the new municipality of Saint-Amable. In 1980, the municipality of Saint-Marc changed its name to the current name of Saint-Marc-sur-Richelieu.

On October 10, 2012, the municipality was reportedly the epicenter of an earthquake measuring 4.5 on the Richter scale.^[5]

Population Population trend:[6] Census Population Change (%) 2021 2,245 3.4% 2016 2,172 6.0% 2011 2,050 9.3% 2006 1,876 4.1% 2001 1,957 2.1% 1996 1,999 8.0% 1991 1,851 12.8% 1986 1,641 6.2% 1981 1,545 32.3% 1976 1,168 19.4% 1971 978 6.1% 1966 922 3.5% 1961 891 6.4% 1956 952 6.6% 1951 893 0.9% 1941 901 2.0% 1931 883 3.8% 1921 918 3.4% 1911 956 1.2% 1901 968 7.9% 1891 897 13.4% 1881 1,036 7.3% 1871 1,117 18.1% 1861 1,364 N/A

Language Mother tongue language (2021)[7] Language Population Pct (%) French only 2,165 96.4% English only 35 1.6% Both English and French 25 1.1% Other languages 15 0.7%

• 
  Richelieu River
• 
  Parish Church Sign
• 
  Parish Church
• 
  Parish Priests Plaque
• 
  Maison Janotte, 1760
• 
  Maison Senecal-Moreau, 1762
• 
  Maison Isidore Blanchard, 1763
• 
  Hôtel Les Trois Tillleuls

• List of municipalities in Quebec