Saint-Léonard-de-Portneuf is a municipality in the Capitale-Nationale region of Quebec, Canada.DemographicsPopulation trend: Population in 2011: 1019 Population in 2006: 1046 Population in 2001: 1010 Population in 1996: 988 Population in 1991: 997 Private dwellings occupied by usual residents: 449 Mother tongue: English as first language: 0% French as first language: 98.1% English and French as first language: 0% Other as first language: 1.9%