| Statistic | Leslie Park | Ottawa | Ontario |
| Population | 3,738 | 1,058,126 | 14,804,681 |
| Population density (sq km) | 4,026 | 365 | 15 |
| Median age | 43.7 | 39.2 | 40.9 |
| Male/Female ratio | 1.1:1 | 1.0:1 | 1.0:1 |
| Married couples | 64% | 70% | 71% |
| Families w/ kids at home | 37% | 45% | 46% |
| Speak English only | 66.4% | 59.3% | 86.1% |
| Speak French only | 0.2% | 1.4% | 0.3% |
| Data | Percent |
| Arab | 5.1% |
| Chinese | 4.8% |
| Black | 3.7% |
| Southeast Asian | 2.7% |
| South Asian | 2.4% |
| Data | Percent |
| China | 2.6% |
| United Kingdom | 2.2% |
| United States | 1.4% |
| Vietnam | 1.3% |
| Other West Central Asia And Middle East | 0.9% |