| Statistic | Petit-Rocher | New Brunswick | National |
| Population | 1,890 | 779,582 | 38,134,230 |
| Population density (sq km) | 417 | 11 | 4 |
| Median age | 55.6 | 45.7 | 40.9 |
| Male/Female ratio | 1.1:1 | 1.0:1 | 1.0:1 |
| Married couples | 64% | 66% | 66% |
| Families w/ kids at home | 28% | 37% | 43% |
| Speak English only | 1.9% | 57.5% | 68.8% |
| Speak French only | 27.9% | 7.9% | 4.5% |
| Data | Percent |
| N/A | 0.0% |
| Data | Percent |
| France | 1.4% |
| Algeria | 0.2% |
| Germany | 0.1% |
| Morocco | 0.1% |
| Other Eastern Africa | 0.1% |