| Statistic | Saint-Colomban | Saint-Jérôme | Quebec |
| Population | 17,752 | 79,702 | 8,565,732 |
| Population density (sq km) | 180 | 866 | 6 |
| Median age | 37.3 | 44.6 | 42.6 |
| Male/Female ratio | 0.9:1 | 1.1:1 | 1.0:1 |
| Married couples | 37% | 41% | 50% |
| Families w/ kids at home | 50% | 35% | 40% |
| Speak English only | 0.5% | 0.3% | 4.7% |
| Speak French only | 57.4% | 63.3% | 49.5% |
| Data | Percent |
| Black | 0.5% |
| Latin American | 0.4% |
| Arab | 0.2% |
| Chinese | 0.2% |
| Southeast Asian | 0.2% |
| Data | Percent |
| France | 1.0% |
| United States | 0.2% |
| Other Western Europe | 0.2% |
| Italy | 0.1% |
| Portugal | 0.1% |
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