| Statistic | Trois-Rivières-Ouest | Trois-Rivières | Quebec |
| Population | 2,781 | 138,766 | 8,565,732 |
| Population density (sq km) | 2,801 | 478 | 6 |
| Median age | 46.7 | 46.6 | 42.6 |
| Male/Female ratio | 1.2:1 | 1.1:1 | 1.0:1 |
| Married couples | 40% | 43% | 50% |
| Families w/ kids at home | 29% | 34% | 40% |
| Speak English only | 0.1% | 0.2% | 4.7% |
| Speak French only | 73.1% | 68.3% | 49.5% |
| Data | Percent |
| Latin American | 2.1% |
| Black | 1.4% |
| South Asian | 0.5% |
| Arab | 0.3% |
| Chinese | 0.0% |
| Data | Percent |
| Colombia | 1.2% |
| Haiti | 0.3% |
| France | 0.3% |
| Other Caribbean And Bahamas | 0.3% |
| Bosnia Herzegovina | 0.3% |