Lac-du-Cerf is a municipality in the Laurentides region of Quebec, Canada, part of the Antoine-Labelle Regional County Municipality. It is located on and named after Lac du Cerf (Deer Lake).DemographicsPopulation trend: Population in 2011: 415 Population in 2006: 424 Population in 2001: 420 Population in 1996: 425 Population in 1991: 409 Private dwellings occupied by usual residents: 227 Mother tongue: English as first language: 5% French as first language: 95% English and French as first language: 0% Other as first language: 0%