| Statistic | Quartier de la Seigneure | Saint-Eustache | Quebec |
| Population | 4,142 | 44,539 | 8,565,732 |
| Population density (sq km) | 3,900 | 645 | 6 |
| Median age | 47.1 | 44.5 | 42.6 |
| Male/Female ratio | 1.1:1 | 1.0:1 | 1.0:1 |
| Married couples | 49% | 49% | 50% |
| Families w/ kids at home | 31% | 41% | 40% |
| Speak English only | 1.1% | 1.1% | 4.7% |
| Speak French only | 52.0% | 49.5% | 49.5% |
| Data | Percent |
| Black | 2.5% |
| Arab | 1.1% |
| Latin American | 1.0% |
| South Asian | 0.3% |
| All Other Visible Minorities | 0.2% |
| Data | Percent |
| Morocco | 1.1% |
| France | 0.8% |
| Haiti | 0.5% |
| Italy | 0.3% |
| Other Western Europe | 0.3% |