| Statistic | Saint-Louis | New Brunswick | National |
| Population | 1,885 | 779,582 | 38,134,230 |
| Population density (sq km) | 7 | 11 | 4 |
| Median age | 55.6 | 45.7 | 40.9 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married couples | 70% | 66% | 66% |
| Families w/ kids at home | 33% | 37% | 43% |
| Speak English only | 6.1% | 57.5% | 68.8% |
| Speak French only | 7.6% | 7.9% | 4.5% |
| Data | Percent |
| Chinese | 1.0% |
| Black | 0.7% |
| West Asian | 0.2% |
| N/A | 0.0% |
| Data | Percent |
| United States | 2.2% |
| United Kingdom | 1.0% |
| China | 0.8% |
| Bosnia Herzegovina | 0.2% |
| Other Eastern Europe | 0.2% |