Demographics
In the 2021 Census of Population conducted by Statistics Canada, Schefferville had a population of living in of its total private dwellings, a change of from its 2016 population of . With a land area of , it had a population density of in 2021.
| 1956 |1632
| 1961 |3178
| 1966 |3086
| 1971 |3271
| 1976 |3429
| 1981 |1997
| 1986 |322
| 1991 |303
| 1996 |578
| 2001 |240
| 2006 |202
| 2011 |213
| 2016 |130
| 2021 |244
Languages
The Naskapi and Montagnais/Innu languages are, generally, mutually intelligible. Most local inhabitants are able to speak varying amounts of all the local languages, and code-switching is common in conversation.
The breakdown of mother tongues is (2021):