| Statistic | University Downs | Waterloo | Ontario |
| Population | 4,036 | 118,234 | 14,804,681 |
| Population density (sq km) | 1,583 | 1,752 | 15 |
| Median age | 38.2 | 37.7 | 40.9 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married couples | 70% | 75% | 71% |
| Families w/ kids at home | 46% | 48% | 46% |
| Speak English only | 90.9% | 89.1% | 86.1% |
| Speak French only | 0.1% | 0.1% | 0.3% |
| Data | Percent |
| Chinese | 5.9% |
| South Asian | 4.9% |
| Arab | 2.9% |
| Latin American | 2.2% |
| Southeast Asian | 1.9% |
| Data | Percent |
| China | 2.6% |
| Poland | 1.6% |
| United Kingdom | 1.3% |
| Guyana | 1.1% |
| Pakistan | 1.1% |