Constance Bay is a population centre in West Carleton-March Ward in the rural northwest of the city of Ottawa, Ontario, Canada. Prior to amalgamation in 2001, the community was part of West Carleton Township. It is situated 25 km northwest of the suburb of Kanata. The community surrounds the Torbolton Forest (a protected and managed green-space) and is located on a peninsula between and on the Ottawa River. According to the Canada 2016 Census, the population of the community was 2,314. 86% of dwellings are occupied by usual residents.