| Statistic | Glen Williams | Halton Hills | Ontario |
| Population | 2,581 | 65,483 | 14,804,681 |
| Population density (sq km) | 457 | 235 | 15 |
| Median age | 43.0 | 40.7 | 40.9 |
| Male/Female ratio | 0.8:1 | 1.0:1 | 1.0:1 |
| Married couples | 80% | 75% | 71% |
| Families w/ kids at home | 52% | 54% | 46% |
| Speak English only | 89.1% | 91.3% | 86.1% |
| Speak French only | 0.1% | 0.0% | 0.3% |
| Data | Percent |
| South Asian | 2.4% |
| Arab | 2.2% |
| All Other Visible Minorities | 1.3% |
| Filipino | 1.2% |
| Southeast Asian | 1.1% |
| Data | Percent |
| United Kingdom | 2.7% |
| Other Western Europe | 1.6% |
| Italy | 1.4% |
| Moldova | 1.1% |
| Germany | 0.8% |