| Statistic | Oshawa | Ontario | National |
| Population | 176,009 | 14,804,681 | 38,134,230 |
| Population density (sq km) | 1,186 | 15 | 4 |
| Median age | 40.7 | 40.9 | 40.9 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married couples | 61% | 71% | 66% |
| Families w/ kids at home | 41% | 46% | 43% |
| Speak English only | 92.7% | 86.1% | 68.8% |
| Speak French only | 0.1% | 0.3% | 4.5% |
| Data | Percent |
| Black | 7.0% |
| South Asian | 5.5% |
| Chinese | 1.7% |
| Filipino | 1.4% |
| All Other Visible Minorities | 1.2% |
| Data | Percent |
| United Kingdom | 2.8% |
| Jamaica | 1.2% |
| Philippines | 1.0% |
| India | 0.9% |
| Poland | 0.7% |