| Statistic | Yamaska | Saint-Hyacinthe | Quebec |
| Population | 5,624 | 56,946 | 8,565,732 |
| Population density (sq km) | 821 | 301 | 6 |
| Median age | 47.8 | 45.9 | 42.6 |
| Male/Female ratio | 1.1:1 | 1.1:1 | 1.0:1 |
| Married couples | 50% | 45% | 50% |
| Families w/ kids at home | 38% | 33% | 40% |
| Speak English only | 0.1% | 0.2% | 4.7% |
| Speak French only | 73.6% | 70.2% | 49.5% |
| Data | Percent |
| Latin American | 1.5% |
| Black | 0.8% |
| South Asian | 0.1% |
| Chinese | 0.0% |
| N/A | 0.0% |
| Data | Percent |
| Colombia | 0.7% |
| France | 0.4% |
| Mexico | 0.3% |
| India | 0.2% |
| Cameroon | 0.2% |
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