| Statistic | Mary Allen | Waterloo | Ontario |
| Population | 1,307 | 118,234 | 14,804,681 |
| Population density (sq km) | 4,004 | 1,752 | 15 |
| Median age | 45.3 | 37.7 | 40.9 |
| Male/Female ratio | 0.9:1 | 1.0:1 | 1.0:1 |
| Married couples | 71% | 75% | 71% |
| Families w/ kids at home | 33% | 48% | 46% |
| Speak English only | 86.4% | 89.1% | 86.1% |
| Speak French only | 0.0% | 0.1% | 0.3% |
| Data | Percent |
| Chinese | 3.5% |
| Latin American | 3.4% |
| South Asian | 1.9% |
| West Asian | 1.2% |
| Filipino | 0.8% |
| Data | Percent |
| Iran | 2.8% |
| United Kingdom | 2.8% |
| Romania | 1.2% |
| Other West Central Asia And Middle East | 1.1% |
| South Korea | 0.9% |
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