| Statistic | Plage-Lac-Henri | Mascouche | Quebec |
| Population | 8,116 | 52,212 | 8,565,732 |
| Population density (sq km) | 2,731 | 470 | 6 |
| Median age | 38.9 | 39.8 | 42.6 |
| Male/Female ratio | 1.1:1 | 1.0:1 | 1.0:1 |
| Married couples | 42% | 43% | 50% |
| Families w/ kids at home | 47% | 46% | 40% |
| Speak English only | 0.2% | 0.5% | 4.7% |
| Speak French only | 55.1% | 56.9% | 49.5% |
| Data | Percent |
| Black | 7.5% |
| Latin American | 1.7% |
| Arab | 0.9% |
| Chinese | 0.4% |
| Southeast Asian | 0.4% |
| Data | Percent |
| Haiti | 1.2% |
| France | 0.8% |
| Cameroon | 0.5% |
| Algeria | 0.4% |
| Other South America | 0.3% |