| Statistic | Fossambault-sur-le-Lac | Quebec | National |
| Population | 2,182 | 8,565,732 | 38,134,230 |
| Population density (sq km) | 184 | 6 | 4 |
| Median age | 43.0 | 42.6 | 40.9 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married couples | 45% | 50% | 66% |
| Families w/ kids at home | 38% | 40% | 43% |
| Speak English only | 0.4% | 4.7% | 68.8% |
| Speak French only | 61.7% | 49.5% | 4.5% |
| Data | Percent |
| Black | 0.8% |
| Latin American | 0.4% |
| Chinese | 0.1% |
| N/A | 0.0% |
| Data | Percent |
| France | 2.3% |
| Brazil | 0.3% |
| China | 0.2% |
| Russia | 0.2% |
| Ireland | 0.2% |
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