| Statistic | Notre-Dame-de-la-Merci | Quebec | National |
| Population | 893 | 8,565,732 | 38,134,230 |
| Population density (sq km) | 4 | 6 | 4 |
| Median age | 60.2 | 42.6 | 40.9 |
| Male/Female ratio | 0.8:1 | 1.0:1 | 1.0:1 |
| Married couples | 57% | 50% | 66% |
| Families w/ kids at home | 18% | 40% | 43% |
| Speak English only | 0.4% | 4.7% | 68.8% |
| Speak French only | 61.2% | 49.5% | 4.5% |
| Data | Percent |
| Latin American | 0.9% |
| Multiple Visible Minorities | 0.7% |
| N/A | 0.0% |
| Data | Percent |
| Other Western Europe | 3.8% |
| El Salvador | 0.7% |
| Germany | 0.2% |
| Philippines | 0.2% |
| Chile | 0.1% |