| Statistic | Long Harbour-Mount Arlington Heights | Newfoundland and Labrador | National |
| Population | 246 | 513,653 | 38,134,230 |
| Population density (sq km) | 13 | 1 | 4 |
| Median age | 58.2 | 46.3 | 40.9 |
| Male/Female ratio | 0.8:1 | 1.0:1 | 1.0:1 |
| Married couples | 83% | 70% | 66% |
| Families w/ kids at home | 33% | 39% | 43% |
| Speak English only | 95.5% | 94.6% | 68.8% |
| Speak French only | 0.0% | 0.0% | 4.5% |
| Data | Percent |
| N/A | 0.0% |
| Data | Percent |
| Bangladesh | 0.8% |
| Other Western Africa | 0.8% |
| Peru | 0.4% |
| Ireland | 0.4% |
| Saudi Arabia | 0.4% |