| Statistic | Marlgorough | Montréal | Quebec |
| Population | 7,375 | 1,811,008 | 8,565,732 |
| Population density (sq km) | 2,964 | 4,984 | 6 |
| Median age | 43.7 | 38.7 | 42.6 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married couples | 76% | 54% | 50% |
| Families w/ kids at home | 53% | 41% | 40% |
| Speak English only | 14.3% | 10.2% | 4.7% |
| Speak French only | 18.5% | 29.8% | 49.5% |
| Data | Percent |
| Arab | 16.4% |
| Chinese | 15.5% |
| Black | 8.6% |
| South Asian | 4.6% |
| Southeast Asian | 3.5% |
| Data | Percent |
| China | 6.6% |
| Lebanon | 3.9% |
| Syria | 3.6% |
| Algeria | 3.0% |
| Morocco | 2.9% |