| Statistic | Chatham | Chatham-Kent | Ontario |
| Population | 46,441 | 105,414 | 14,804,681 |
| Population density (sq km) | 1,332 | 42 | 15 |
| Median age | 44.4 | 45.6 | 40.9 |
| Male/Female ratio | 1.1:1 | 1.0:1 | 1.0:1 |
| Married couples | 65% | 70% | 71% |
| Families w/ kids at home | 37% | 37% | 46% |
| Speak English only | 92.0% | 92.4% | 86.1% |
| Speak French only | 0.1% | 0.1% | 0.3% |
| Data | Percent |
| Black | 3.7% |
| South Asian | 1.3% |
| Southeast Asian | 0.5% |
| Chinese | 0.5% |
| Latin American | 0.4% |
| Data | Percent |
| United Kingdom | 1.3% |
| Netherlands | 1.2% |
| United States | 0.8% |
| Portugal | 0.6% |
| Italy | 0.5% |