| Statistic | Bois-Joli | Saint-Hyacinthe | Quebec |
| Population | 3,952 | 56,946 | 8,565,732 |
| Population density (sq km) | 1,254 | 301 | 6 |
| Median age | 51.6 | 45.9 | 42.6 |
| Male/Female ratio | 1.1:1 | 1.1:1 | 1.0:1 |
| Married couples | 54% | 45% | 50% |
| Families w/ kids at home | 31% | 33% | 40% |
| Speak English only | 0.4% | 0.2% | 4.7% |
| Speak French only | 63.7% | 70.2% | 49.5% |
| Data | Percent |
| Black | 3.8% |
| Latin American | 1.7% |
| Chinese | 1.1% |
| All Other Visible Minorities | 0.9% |
| Arab | 0.7% |
| Data | Percent |
| Colombia | 1.0% |
| France | 0.9% |
| Côte d'Ivoire | 0.8% |
| Other Western Africa | 0.8% |
| Algeria | 0.8% |