| Statistic | Dumbarton | New Brunswick | National |
| Population | 333 | 779,582 | 38,134,230 |
| Population density (sq km) | 1 | 11 | 4 |
| Median age | 52.6 | 45.7 | 40.9 |
| Male/Female ratio | 1.0:1 | 1.0:1 | 1.0:1 |
| Married couples | 67% | 66% | 66% |
| Families w/ kids at home | 29% | 37% | 43% |
| Speak English only | 95.4% | 57.5% | 68.8% |
| Speak French only | 0.0% | 7.9% | 4.5% |
| Data | Percent |
| N/A | 0.0% |
| Data | Percent |
| United Kingdom | 5.6% |
| India | 0.3% |
| Italy | 0.3% |
| N/A | 0.0% |