| Statistic | D'youville | Châteauguay | Quebec |
| Population | 5,469 | 52,776 | 8,565,732 |
| Population density (sq km) | 880 | 1,434 | 6 |
| Median age | 42.7 | 42.2 | 42.6 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married couples | 49% | 55% | 50% |
| Families w/ kids at home | 41% | 43% | 40% |
| Speak English only | 7.1% | 11.7% | 4.7% |
| Speak French only | 35.5% | 29.5% | 49.5% |
| Data | Percent |
| Black | 8.2% |
| Latin American | 1.5% |
| Arab | 1.1% |
| Southeast Asian | 0.3% |
| Filipino | 0.2% |
| Data | Percent |
| Jamaica | 1.0% |
| Haiti | 0.6% |
| Germany | 0.6% |
| Other Caribbean And Bahamas | 0.6% |
| Italy | 0.5% |