| Statistic | Thorold South | Thorold | Ontario |
| Population | 2,829 | 21,396 | 14,804,681 |
| Population density (sq km) | 254 | 237 | 15 |
| Median age | 40.1 | 41.2 | 40.9 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married couples | 63% | 66% | 71% |
| Families w/ kids at home | 43% | 42% | 46% |
| Speak English only | 93.7% | 93.0% | 86.1% |
| Speak French only | 0.2% | 0.1% | 0.3% |
| Data | Percent |
| Black | 4.2% |
| South Asian | 3.6% |
| Southeast Asian | 0.8% |
| Filipino | 0.6% |
| N/A | 0.0% |
| Data | Percent |
| United Kingdom | 1.7% |
| India | 1.3% |
| Nigeria | 1.0% |
| Philippines | 0.4% |
| United States | 0.4% |