| Statistic | Unionville | Markham | Ontario |
| Population | 34,934 | 359,111 | 14,804,681 |
| Population density (sq km) | 2,742 | 1,675 | 15 |
| Median age | 42.4 | 40.7 | 40.9 |
| Male/Female ratio | 1.1:1 | 1.0:1 | 1.0:1 |
| Married couples | 80% | 82% | 71% |
| Families w/ kids at home | 53% | 58% | 46% |
| Speak English only | 85.5% | 84.1% | 86.1% |
| Speak French only | 0.0% | 0.0% | 0.3% |
| Data | Percent |
| Chinese | 65.5% |
| South Asian | 6.3% |
| Multiple Visible Minorities | 1.7% |
| Black | 1.2% |
| Korean | 1.1% |
| Data | Percent |
| China | 24.9% |
| Hong Kong | 14.6% |
| India | 2.2% |
| Taiwan | 1.3% |
| United Kingdom | 1.2% |