| Statistic | O'Brien Lake | Grande Prairie | Alberta |
| Population | 2,022 | 69,512 | 4,479,459 |
| Population density (sq km) | 1,341 | 500 | 7 |
| Median age | 30.2 | 32.8 | 37.2 |
| Male/Female ratio | 0.9:1 | 0.9:1 | 1.0:1 |
| Married couples | 76% | 61% | 71% |
| Families w/ kids at home | 68% | 46% | 46% |
| Speak English only | 87.4% | 91.7% | 91.8% |
| Speak French only | 0.3% | 0.1% | 0.1% |
| Data | Percent |
| Chinese | 3.3% |
| Latin American | 2.0% |
| Black | 1.8% |
| Filipino | 1.7% |
| Korean | 0.6% |
| Data | Percent |
| Philippines | 1.7% |
| Mexico | 0.9% |
| Other Northern Africa | 0.7% |
| China | 0.6% |
| Ethiopia | 0.5% |