McMasterville
City
Sacré Coeur de Jésus church
Seal
Location within La Vallée-du-Richelieu RCM.
McMasterville Location in southern Quebec.
Coordinates: 45°33′N 73°14′W / 45.550°N 73.233°W / 45.550; -73.233[1]
Country	Canada
Province	Quebec
Region	Montérégie
RCM	La Vallée-du-Richelieu
Constituted	July 31, 1917
Government [2][3]
• Mayor	Martin Dulac
• Federal riding	Beloeil—Chambly
• Prov. riding	Borduas
Area [2][4]
• Total	3.40 km2 (1.31 sq mi)
• Land	3.12 km2 (1.20 sq mi)
Population  (2021)[4]
• Total	5,936
• Density	1,904/km2 (4,930/sq mi)
• Pop 2016-2021	4.2%
• Dwellings	2,459
Time zone	UTC−5 (EST)
• Summer (DST)	UTC−4 (EDT)
Postal code(s)	J3G 6N9
Area code(s)	450 and 579
Highways	R-116 R-223
Website	www.mcmasterville.ca

McMasterville is a city in southwestern Quebec, Canada on the Richelieu River in La Vallée-du-Richelieu Regional County Municipality. The population as of the 2021 Canadian Census was 5,936. It is within the Administrative Region of Montérégie.

The town was founded in 1917 to house workers of the Canadian Explosives Limited which operated until 1998. The town is named after the first chairman of that company, William McMaster.

McMasterville is located along the Richelieu river, on the shore facing Mont St-Hilaire and Otterburn Park.

Population Population trend:[5] Census Population Change (%) 2021 5,936 4.2% 2016 5,695 1.5% 2011 5,615 7.3% 2006 5,234 31.4% 2001 3,984 4.5% 1996 3,813 3.4% 1991 3,689 0.7% 1986 3,665 1.5% 1981 3,612 13.4% 1976 3,184 26.4% 1971 2,518 2.5% 1966 2,456 18.4% 1961 2,075 19.4% 1956 1,738 15.2% 1951 1,509 37.6% 1941 1,097 33.9% 1931 819 33.8% 1921 612 N/A

Language Mother tongue language (2021)[6] Language Population Pct (%) French only 5,445 91.7% English only 195 3.3% Both English and French 105 1.8% Other languages 165 2.8%

In September 2023 the Swedish upstart Northvolt formally announced plans to build a 60 GWh/year battery cell factory on the grounds of the former CIL factory around which McMasterville was once founded. The factory was expected to start producing cells in 2026 and to employ a staff of 3000. The factory would be heavily subsidised by Canada, Quebec and Ottawa.

"Northvolt officialisera jeudi la construction d'une usine en Montérégie" (in French). La Presse. 2023-09-27. Retrieved 2023-09-29.

Since 2000, McMasterville is served by the McMasterville commuter rail station on the Réseau de transport métropolitain's Mont-Saint-Hilaire line. Local bus service is provided by the RTM.

The town is host to the École d'éducation internationale which offers secondary level education where students can follow the International Baccalaureate Middle Years Programme as defined by the IBO. A primary school, École la Farandole, is also present.

The South Shore Protestant Regional School Board previously served the city.^[7]

• List of cities in Quebec