Carignan is a town in southwestern Quebec, Canada on the Richelieu River in the Regional County Municipality of La-Vallée-du-Richelieu. The population as of the Canada 2011 Census was 7,966. Carignan was originally the Village Municipality of Chambly. The village of Chambly was established in 1855, less than 10 years after the municipality of Chambly was established. In 1965, the village of Chambly was renamed Carignan and incorporated as a city.