| Statistic | Rolston | Hamilton | Ontario |
| Population | 4,839 | 11,739 | 14,804,681 |
| Population density (sq km) | 3,951 | 518 | 15 |
| Median age | 38.0 | 40.5 | 40.9 |
| Male/Female ratio | 1.1:1 | 1.0:1 | 1.0:1 |
| Married couples | 58% | 68% | 71% |
| Families w/ kids at home | 38% | 44% | 46% |
| Speak English only | 91.5% | 92.3% | 86.1% |
| Speak French only | 0.3% | 0.1% | 0.3% |
| Data | Percent |
| Black | 8.6% |
| South Asian | 6.9% |
| Arab | 5.8% |
| Latin American | 3.0% |
| Filipino | 2.9% |
| Data | Percent |
| Iraq | 2.7% |
| Italy | 2.6% |
| United Kingdom | 2.5% |
| Philippines | 1.6% |
| Bangladesh | 1.5% |