| Statistic | Semiahmoo | British Columbia | National |
| Population | 127 | 5,149,422 | 38,134,230 |
| Population density (sq km) | 93 | 5 | 4 |
| Median age | 44.5 | 42.3 | 40.9 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married couples | 64% | 71% | 66% |
| Families w/ kids at home | 6% | 41% | 43% |
| Speak English only | 93.6% | 89.7% | 68.8% |
| Speak French only | 0.0% | 0.0% | 4.5% |
| Data | Percent |
| Chinese | 8.8% |
| Latin American | 8.0% |
| N/A | 0.0% |
| Data | Percent |
| Fiji | 1.6% |
| China | 1.6% |
| India | 1.6% |
| Ethiopia | 1.6% |
| Australia | 1.6% |