| Statistic | Campbellville | Milton | Ontario |
| Population | 1,646 | 142,128 | 14,804,681 |
| Population density (sq km) | 770 | 364 | 15 |
| Median age | 48.2 | 34.5 | 40.9 |
| Male/Female ratio | 0.9:1 | 1.0:1 | 1.0:1 |
| Married couples | 81% | 79% | 71% |
| Families w/ kids at home | 45% | 60% | 46% |
| Speak English only | 92.4% | 90.2% | 86.1% |
| Speak French only | 0.1% | 0.1% | 0.3% |
| Data | Percent |
| Chinese | 5.4% |
| South Asian | 4.4% |
| Black | 2.7% |
| Korean | 2.2% |
| Filipino | 2.1% |
| Data | Percent |
| United Kingdom | 4.4% |
| Kenya | 1.5% |
| Poland | 1.5% |
| China | 1.5% |
| India | 1.4% |