| Statistic | Blackfriars-Petersville Heritage District | London | Ontario |
| Population | 1,128 | 421,456 | 14,804,681 |
| Population density (sq km) | 2,206 | 984 | 15 |
| Median age | 34.0 | 39.1 | 40.9 |
| Male/Female ratio | 1.0:1 | 1.1:1 | 1.0:1 |
| Married couples | 47% | 67% | 71% |
| Families w/ kids at home | 27% | 41% | 46% |
| Speak English only | 89.1% | 90.9% | 86.1% |
| Speak French only | 0.0% | 0.1% | 0.3% |
| Data | Percent |
| Black | 4.5% |
| South Asian | 3.2% |
| Latin American | 1.8% |
| West Asian | 1.1% |
| Chinese | 0.9% |
| Data | Percent |
| United Kingdom | 1.5% |
| Bangladesh | 0.9% |
| Pakistan | 0.7% |
| Colombia | 0.6% |
| Ethiopia | 0.5% |
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