| Statistic | Cornwall | Prince Edward Island | National |
| Population | 6,417 | 160,374 | 38,134,230 |
| Population density (sq km) | 225 | 27 | 4 |
| Median age | 38.7 | 43.7 | 40.9 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married couples | 73% | 71% | 66% |
| Families w/ kids at home | 47% | 40% | 43% |
| Speak English only | 84.7% | 86.6% | 68.8% |
| Speak French only | 0.0% | 0.1% | 4.5% |
| Data | Percent |
| Chinese | 1.8% |
| Black | 0.5% |
| South Asian | 0.3% |
| Latin American | 0.3% |
| West Asian | 0.2% |
| Data | Percent |
| United Kingdom | 1.3% |
| China | 1.1% |
| United States | 0.8% |
| Germany | 0.6% |
| Nigeria | 0.4% |