| Statistic | Ardtrea | Severn | Ontario |
| Population | 150 | 16,377 | 14,804,681 |
| Population density (sq km) | 361 | 27 | 15 |
| Median age | 47.8 | 49.2 | 40.9 |
| Male/Female ratio | 0.8:1 | 1.0:1 | 1.0:1 |
| Married couples | 70% | 72% | 71% |
| Families w/ kids at home | 33% | 38% | 46% |
| Speak English only | 96.3% | 95.4% | 86.1% |
| Speak French only | 0.0% | 0.0% | 0.3% |
| Data | Percent |
| South Asian | 3.3% |
| Chinese | 0.4% |
| N/A | 0.0% |
| Data | Percent |
| United Kingdom | 1.6% |
| Other Southern Europe | 1.6% |
| Germany | 1.2% |
| Hungary | 0.8% |
| United States | 0.8% |