| Statistic | La Plaine | Terrebonne | Quebec |
| Population | 22,492 | 119,135 | 8,565,732 |
| Population density (sq km) | 2,556 | 755 | 6 |
| Median age | 36.4 | 40.1 | 42.6 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married couples | 40% | 46% | 50% |
| Families w/ kids at home | 51% | 48% | 40% |
| Speak English only | 0.4% | 0.5% | 4.7% |
| Speak French only | 64.9% | 56.4% | 49.5% |
| Data | Percent |
| Black | 11.0% |
| Latin American | 2.8% |
| Arab | 1.6% |
| Chinese | 0.2% |
| Southeast Asian | 0.2% |
| Data | Percent |
| Haiti | 2.7% |
| Morocco | 0.7% |
| El Salvador | 0.4% |
| Algeria | 0.4% |
| Congo, The Democratic Republic of The | 0.4% |