| Statistic | Saint-Pierre-de-la-Rivière-du-Sud | Quebec | National |
| Population | 880 | 8,565,732 | 38,134,230 |
| Population density (sq km) | 10 | 6 | 4 |
| Median age | 46.2 | 42.6 | 40.9 |
| Male/Female ratio | 0.9:1 | 1.0:1 | 1.0:1 |
| Married couples | 49% | 50% | 66% |
| Families w/ kids at home | 41% | 40% | 43% |
| Speak English only | 0.1% | 4.7% | 68.8% |
| Speak French only | 87.0% | 49.5% | 4.5% |
| Data | Percent |
| West Asian | 0.4% |
| N/A | 0.0% |
| Data | Percent |
| N/A | 0.0% |