| Statistic | Grantham West | St. Catharines | Ontario |
| Population | 8,650 | 140,913 | 14,804,681 |
| Population density (sq km) | 2,513 | 1,410 | 15 |
| Median age | 52.6 | 44.4 | 40.9 |
| Male/Female ratio | 1.1:1 | 1.1:1 | 1.0:1 |
| Married couples | 77% | 66% | 71% |
| Families w/ kids at home | 39% | 38% | 46% |
| Speak English only | 93.3% | 91.9% | 86.1% |
| Speak French only | 0.0% | 0.1% | 0.3% |
| Data | Percent |
| Black | 2.0% |
| Chinese | 1.2% |
| Southeast Asian | 1.0% |
| Filipino | 0.7% |
| Latin American | 0.3% |
| Data | Percent |
| United Kingdom | 3.8% |
| Netherlands | 1.7% |
| Italy | 1.1% |
| Ukraine | 1.1% |
| United States | 1.0% |