| Statistic | Castle Island | Alberta | National |
| Population | 7 | 4,479,459 | 38,134,230 |
| Population density (sq km) | 222 | 7 | 4 |
| Median age | 47.8 | 37.2 | 40.9 |
| Male/Female ratio | 0.5:1 | 1.0:1 | 1.0:1 |
| Married couples | 50% | 71% | 66% |
| Families w/ kids at home | 0% | 46% | 43% |
| Speak English only | 77.8% | 91.8% | 68.8% |
| Speak French only | 0.0% | 0.1% | 4.5% |
| Data | Percent |
| N/A | 0.0% |
| Data | Percent |
| Brazil | 22.2% |
| Egypt | 11.1% |
| India | 11.1% |
| Italy | 11.1% |
| France | 11.1% |