| Statistic | Penetanguishene | Penetanguishene | Ontario |
| Population | 9,690 | 9,475 | 14,804,681 |
| Population density (sq km) | 364 | 368 | 15 |
| Median age | 50.6 | 50.5 | 40.9 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married couples | 66% | 66% | 71% |
| Families w/ kids at home | 34% | 33% | 46% |
| Speak English only | 80.2% | 80.5% | 86.1% |
| Speak French only | 0.1% | 0.1% | 0.3% |
| Data | Percent |
| Black | 0.9% |
| Chinese | 0.2% |
| South Asian | 0.2% |
| Korean | 0.1% |
| Filipino | 0.0% |
| Data | Percent |
| United Kingdom | 2.9% |
| Germany | 0.9% |
| Netherlands | 0.6% |
| United States | 0.4% |
| Italy | 0.2% |