| Statistic | Petit Mathias | Saguenay | Quebec |
| Population | 616 | 145,134 | 8,565,732 |
| Population density (sq km) | 2,453 | 128 | 6 |
| Median age | 44.7 | 46.6 | 42.6 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married couples | 53% | 48% | 50% |
| Families w/ kids at home | 38% | 36% | 40% |
| Speak English only | 0.0% | 0.2% | 4.7% |
| Speak French only | 79.5% | 77.2% | 49.5% |
| Data | Percent |
| Filipino | 0.3% |
| N/A | 0.0% |
| Data | Percent |
| Colombia | 0.3% |
| Serbia | 0.2% |
| N/A | 0.0% |