Saint-Mathias-sur-Richelieu (French pronunciation: [sɛ̃ matjas syʁ ʁiʃ(ə)ljø], lit. 'Saint Mathias on Richelieu') is a municipality in the Canadian province of Quebec. It is located within the Rouville Regional County Municipality in the Montérégie region on the Richelieu River. The population as of the Canada 2021 Census was 4,544.

Population Population trend:[5] Census Population Change (%) 2021 4,544 0.3% 2016 4,531 1.9% 2011 4,618 2.5% 2006 4,506 8.6% 2001 4,149 3.4% 1996 4,014 13.0% 1991 3,553 15.9% 1986 3,065 4.6% 1981 2,929 49.0% 1976 1,966 18.3% 1971 1,662 14.0% 1966 1,458 38.2% 1961 1,055 4.2% 1956 1,012 0.9% 1951 1,003 46.2% 1941 686 3.9% 1931 660 10.2% 1921 735 1.8% 1911 722 9.9% 1901 657 9.4% 1891 725 15.0% 1881 853 9.2% 1871 939 48.7% 1861 1,829 N/A

Language Mother tongue language (2021)[6] Language Population Pct (%) French only 4,285 94.5% English only 100 2.2% Both English and French 45 1.0% Other languages 90 2.0%

Michel Jean - Anchorman and journalist TVA Nouvelles and Le Canale Nouvelles (LCN) a Quebec-based news network

• List of municipalities in Quebec

• Municipalité de Saint-Mathias-sur-Richelieu