| Statistic | Kernahan | St. Catharines | Ontario |
| Population | 1,231 | 140,913 | 14,804,681 |
| Population density (sq km) | 1,264 | 1,410 | 15 |
| Median age | 46.7 | 44.4 | 40.9 |
| Male/Female ratio | 1.2:1 | 1.1:1 | 1.0:1 |
| Married couples | 62% | 66% | 71% |
| Families w/ kids at home | 28% | 38% | 46% |
| Speak English only | 92.7% | 91.9% | 86.1% |
| Speak French only | 0.2% | 0.1% | 0.3% |
| Data | Percent |
| Black | 4.0% |
| Chinese | 3.5% |
| Southeast Asian | 3.4% |
| Filipino | 2.3% |
| Latin American | 1.9% |
| Data | Percent |
| United Kingdom | 6.6% |
| India | 1.9% |
| Jamaica | 1.7% |
| Philippines | 1.3% |
| Other Eastern Europe | 1.3% |