| Statistic | Newcastle | Clarington | Ontario |
| Population | 10,170 | 104,855 | 14,804,681 |
| Population density (sq km) | 1,008 | 165 | 15 |
| Median age | 41.4 | 38.9 | 40.9 |
| Male/Female ratio | 1.1:1 | 1.0:1 | 1.0:1 |
| Married couples | 76% | 71% | 71% |
| Families w/ kids at home | 50% | 50% | 46% |
| Speak English only | 92.4% | 92.3% | 86.1% |
| Speak French only | 0.0% | 0.0% | 0.3% |
| Data | Percent |
| South Asian | 3.5% |
| Black | 2.6% |
| Latin American | 1.2% |
| All Other Visible Minorities | 0.6% |
| Filipino | 0.6% |
| Data | Percent |
| United Kingdom | 3.7% |
| Netherlands | 1.1% |
| India | 0.8% |
| Jamaica | 0.8% |
| United States | 0.5% |