| Statistic | Sainte-Marguerite-de-Dorchester | Sainte-Marguerite | Quebec |
| Population | 1,091 | 1,085 | 8,565,732 |
| Population density (sq km) | 14 | 13 | 6 |
| Median age | 42.7 | 42.4 | 42.6 |
| Male/Female ratio | 0.9:1 | 0.9:1 | 1.0:1 |
| Married couples | 47% | 47% | 50% |
| Families w/ kids at home | 43% | 43% | 40% |
| Speak English only | 0.4% | 0.4% | 4.7% |
| Speak French only | 79.5% | 79.7% | 49.5% |
| Data | Percent |
| N/A | 0.0% |
| Data | Percent |
| France | 0.1% |
| Israel | 0.1% |
| Germany | 0.1% |
| Colombia | 0.1% |
| Bosnia Herzegovina | 0.1% |