| Statistic | Westmount | Greater Sudbury | Ontario |
| Population | 3,860 | 165,562 | 14,804,681 |
| Population density (sq km) | 383 | 50 | 15 |
| Median age | 46.1 | 43.0 | 40.9 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married couples | 67% | 65% | 71% |
| Families w/ kids at home | 37% | 39% | 46% |
| Speak English only | 65.6% | 60.3% | 86.1% |
| Speak French only | 0.5% | 0.8% | 0.3% |
| Data | Percent |
| South Asian | 1.7% |
| Southeast Asian | 0.6% |
| Filipino | 0.4% |
| Latin American | 0.4% |
| Chinese | 0.4% |
| Data | Percent |
| Italy | 0.9% |
| Greece | 0.8% |
| Philippines | 0.5% |
| United Kingdom | 0.5% |
| Other Eastern Europe | 0.4% |