Saint-Charles-sur-Richelieu (French pronunciation: [sɛ̃ ʃaʁl syʁ ʁiʃ(ə)ljø], lit.

'Saint-Charles 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 1,735.

Population Population trend:[5] Language Mother tongue language (2021)[6]