| Statistic | Champlain | Salaberry-de-Valleyfield | Quebec |
| Population | 4,328 | 42,121 | 8,565,732 |
| Population density (sq km) | 1,227 | 383 | 6 |
| Median age | 54.8 | 48.3 | 42.6 |
| Male/Female ratio | 1.2:1 | 1.1:1 | 1.0:1 |
| Married couples | 40% | 44% | 50% |
| Families w/ kids at home | 26% | 34% | 40% |
| Speak English only | 0.3% | 0.4% | 4.7% |
| Speak French only | 66.3% | 63.0% | 49.5% |
| Data | Percent |
| Black | 0.9% |
| Chinese | 0.5% |
| Arab | 0.3% |
| Filipino | 0.2% |
| South Asian | 0.1% |
| Data | Percent |
| Morocco | 0.4% |
| United States | 0.4% |
| Netherlands | 0.3% |
| France | 0.3% |
| Italy | 0.2% |