| Statistic | Saint-Agapit | Quebec | National | 
| Population | 4,850 | 8,565,732 | 38,134,230 | 
| Population density (sq km) | 72 | 6 | 4 | 
| Median age | 36.7 | 42.6 | 40.9 | 
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 | 
| Married couples | 42% | 50% | 66% | 
| Families w/ kids at home | 43% | 40% | 43% | 
| Speak English only | 0.0% | 4.7% | 68.8% | 
| Speak French only | 78.3% | 49.5% | 4.5% | 
| Data | Percent | 
| Black | 0.3% | 
| Multiple Visible Minorities | 0.2% | 
| Filipino | 0.1% | 
| West Asian | 0.0% | 
| Southeast Asian | 0.0% | 
| Data | Percent | 
| France | 0.5% | 
| Colombia | 0.1% | 
| China | 0.1% | 
| Morocco | 0.1% | 
| Other Western Europe | 0.0% |