| Statistic | Centennial | Oshawa | Ontario |
| Population | 17,345 | 176,009 | 14,804,681 |
| Population density (sq km) | 3,345 | 1,186 | 15 |
| Median age | 47.4 | 40.7 | 40.9 |
| Male/Female ratio | 1.1:1 | 1.0:1 | 1.0:1 |
| Married couples | 59% | 61% | 71% |
| Families w/ kids at home | 31% | 41% | 46% |
| Speak English only | 93.5% | 92.7% | 86.1% |
| Speak French only | 0.1% | 0.1% | 0.3% |
| Data | Percent |
| Black | 6.0% |
| South Asian | 1.9% |
| Arab | 1.7% |
| Chinese | 0.9% |
| Latin American | 0.9% |
| Data | Percent |
| United Kingdom | 4.2% |
| Germany | 0.9% |
| Philippines | 0.8% |
| Jamaica | 0.8% |
| Poland | 0.6% |