| Statistic | Croydon | Longueuil | Quebec |
| Population | 4,038 | 249,920 | 8,565,732 |
| Population density (sq km) | 3,993 | 2,158 | 6 |
| Median age | 41.8 | 41.7 | 42.6 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married couples | 55% | 49% | 50% |
| Families w/ kids at home | 47% | 39% | 40% |
| Speak English only | 2.8% | 2.7% | 4.7% |
| Speak French only | 47.0% | 46.6% | 49.5% |
| Data | Percent |
| Black | 9.9% |
| Arab | 7.5% |
| Latin American | 4.1% |
| South Asian | 2.2% |
| Southeast Asian | 1.5% |
| Data | Percent |
| Morocco | 2.1% |
| Other Eastern Africa | 1.4% |
| Haiti | 1.3% |
| France | 1.3% |
| Other Western Africa | 1.3% |