| Statistic | Saint-Lazare | Quebec | National |
| Population | 21,394 | 8,565,732 | 38,134,230 |
| Population density (sq km) | 307 | 6 | 4 |
| Median age | 42.4 | 42.6 | 40.9 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married couples | 64% | 50% | 66% |
| Families w/ kids at home | 56% | 40% | 43% |
| Speak English only | 10.6% | 4.7% | 68.8% |
| Speak French only | 16.5% | 49.5% | 4.5% |
| Data | Percent |
| Black | 1.9% |
| Chinese | 1.3% |
| Latin American | 0.9% |
| Arab | 0.7% |
| Filipino | 0.6% |
| Data | Percent |
| United Kingdom | 1.3% |
| France | 1.0% |
| China | 0.6% |
| Italy | 0.5% |
| United States | 0.5% |