| Statistic | Quartier Des Iles | Saint-Eustache | Quebec |
| Population | 4,181 | 44,539 | 8,565,732 |
| Population density (sq km) | 1,441 | 645 | 6 |
| Median age | 48.5 | 44.5 | 42.6 |
| Male/Female ratio | 1.1:1 | 1.0:1 | 1.0:1 |
| Married couples | 51% | 49% | 50% |
| Families w/ kids at home | 38% | 41% | 40% |
| Speak English only | 0.6% | 1.1% | 4.7% |
| Speak French only | 49.2% | 49.5% | 49.5% |
| Data | Percent |
| Arab | 4.0% |
| Southeast Asian | 1.9% |
| Black | 1.6% |
| Latin American | 0.6% |
| Korean | 0.2% |
| Data | Percent |
| Lebanon | 1.8% |
| France | 1.2% |
| Romania | 0.6% |
| Morocco | 0.6% |
| Cambodia | 0.6% |
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