| Statistic | Langstaff South | Markham | Ontario |
| Population | 100 | 359,111 | 14,804,681 |
| Population density (sq km) | 328 | 1,675 | 15 |
| Median age | 46.3 | 40.7 | 40.9 |
| Male/Female ratio | 0.9:1 | 1.0:1 | 1.0:1 |
| Married couples | 68% | 82% | 71% |
| Families w/ kids at home | 48% | 58% | 46% |
| Speak English only | 86.6% | 84.1% | 86.1% |
| Speak French only | 0.0% | 0.0% | 0.3% |
| Data | Percent |
| West Asian | 17.3% |
| Chinese | 15.1% |
| Korean | 4.2% |
| South Asian | 3.7% |
| Black | 3.0% |
| Data | Percent |
| Iran | 11.4% |
| China | 5.5% |
| Hong Kong | 3.7% |
| India | 3.2% |
| South Korea | 3.0% |