| Statistic | Westmount | Toronto | Ontario |
| Population | 9,279 | 3,013,752 | 14,804,681 |
| Population density (sq km) | 7,533 | 4,712 | 15 |
| Median age | 48.5 | 39.3 | 40.9 |
| Male/Female ratio | 1.2:1 | 1.1:1 | 1.0:1 |
| Married couples | 65% | 67% | 71% |
| Families w/ kids at home | 40% | 44% | 46% |
| Speak English only | 89.6% | 85.9% | 86.1% |
| Speak French only | 0.1% | 0.1% | 0.3% |
| Data | Percent |
| Black | 13.6% |
| Latin American | 10.4% |
| South Asian | 2.0% |
| Korean | 1.5% |
| Multiple Visible Minorities | 1.3% |
| Data | Percent |
| Ukraine | 5.3% |
| Italy | 5.0% |
| Colombia | 3.5% |
| Other Southern Europe | 3.2% |
| Poland | 2.6% |