| Statistic | Cornwallis | Manitoba | National |
| Population | 4,840 | 1,387,557 | 38,134,230 |
| Population density (sq km) | 10 | 2 | 4 |
| Median age | 32.9 | 37.5 | 40.9 |
| Male/Female ratio | 0.9:1 | 1.0:1 | 1.0:1 |
| Married couples | 75% | 70% | 66% |
| Families w/ kids at home | 48% | 44% | 43% |
| Speak English only | 87.3% | 89.9% | 68.8% |
| Speak French only | 0.5% | 0.1% | 4.5% |
| Data | Percent |
| Black | 1.4% |
| Chinese | 1.2% |
| Latin American | 0.8% |
| Filipino | 0.4% |
| N/A | 0.0% |
| Data | Percent |
| Germany | 1.2% |
| United States | 0.7% |
| China | 0.6% |
| United Kingdom | 0.5% |
| Russia | 0.3% |