| Statistic | Beaconsfield | Quebec | National |
| Population | 20,868 | 8,565,732 | 38,134,230 |
| Population density (sq km) | 1,815 | 6 | 4 |
| Median age | 45.4 | 42.6 | 40.9 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married couples | 78% | 50% | 66% |
| Families w/ kids at home | 55% | 40% | 43% |
| Speak English only | 19.9% | 4.7% | 68.8% |
| Speak French only | 2.2% | 49.5% | 4.5% |
| Data | Percent |
| Chinese | 3.4% |
| South Asian | 2.6% |
| Black | 2.4% |
| Arab | 1.4% |
| Latin American | 1.2% |
| Data | Percent |
| United Kingdom | 2.8% |
| China | 1.7% |
| Iran | 1.7% |
| France | 1.5% |
| United States | 1.3% |