| Statistic | Guelph | Ontario | National |
| Population | 147,931 | 14,804,681 | 38,134,230 |
| Population density (sq km) | 1,616 | 15 | 4 |
| Median age | 37.8 | 40.9 | 40.9 |
| Male/Female ratio | 1.1:1 | 1.0:1 | 1.0:1 |
| Married couples | 69% | 71% | 66% |
| Families w/ kids at home | 46% | 46% | 43% |
| Speak English only | 89.5% | 86.1% | 68.8% |
| Speak French only | 0.1% | 0.3% | 4.5% |
| Data | Percent |
| South Asian | 6.3% |
| Chinese | 3.6% |
| Black | 2.8% |
| Southeast Asian | 2.1% |
| Filipino | 2.1% |
| Data | Percent |
| United Kingdom | 2.5% |
| India | 2.0% |
| Philippines | 1.9% |
| China | 1.4% |
| Vietnam | 1.3% |