| Statistic | Saint-Lazare | Saint-Lazare | Quebec |
| Population | 4,757 | 21,394 | 8,565,732 |
| Population density (sq km) | 319 | 307 | 6 |
| Median age | 44.0 | 42.4 | 42.6 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married couples | 58% | 64% | 50% |
| Families w/ kids at home | 48% | 56% | 40% |
| Speak English only | 7.0% | 10.6% | 4.7% |
| Speak French only | 23.1% | 16.5% | 49.5% |
| Data | Percent |
| Chinese | 0.9% |
| Black | 0.8% |
| Filipino | 0.6% |
| Latin American | 0.6% |
| Korean | 0.5% |
| Data | Percent |
| France | 0.9% |
| United Kingdom | 0.8% |
| China | 0.5% |
| Morocco | 0.4% |
| Other Western Europe | 0.3% |