| Statistic | Erin | Erin | Ontario |
| Population | 3,921 | 12,607 | 14,804,681 |
| Population density (sq km) | 413 | 40 | 15 |
| Median age | 46.0 | 47.1 | 40.9 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married couples | 73% | 75% | 71% |
| Families w/ kids at home | 49% | 47% | 46% |
| Speak English only | 90.1% | 90.0% | 86.1% |
| Speak French only | 0.0% | 0.0% | 0.3% |
| Data | Percent |
| Latin American | 1.1% |
| South Asian | 0.7% |
| Filipino | 0.6% |
| Chinese | 0.4% |
| Black | 0.3% |
| Data | Percent |
| United Kingdom | 4.6% |
| Netherlands | 1.2% |
| United States | 1.2% |
| Italy | 0.5% |
| Portugal | 0.5% |