| Statistic | Saint-Joseph-de-Sorel | Sorel-Tracy | Quebec |
| Population | 1,176 | 34,850 | 8,565,732 |
| Population density (sq km) | 781 | 608 | 6 |
| Median age | 50.7 | 53.2 | 42.6 |
| Male/Female ratio | 0.9:1 | 1.0:1 | 1.0:1 |
| Married couples | 36% | 49% | 50% |
| Families w/ kids at home | 24% | 31% | 40% |
| Speak English only | 0.1% | 0.2% | 4.7% |
| Speak French only | 78.7% | 73.1% | 49.5% |
| Data | Percent |
| Chinese | 0.8% |
| Black | 0.4% |
| N/A | 0.0% |
| Data | Percent |
| Other Western Europe | 0.9% |
| France | 0.7% |
| Egypt | 0.4% |
| Other Western Africa | 0.3% |
| Trinidad And Tobago | 0.1% |