Demographics & People — Petrolia, Pennsylvania
Population Overview
| Population (Census) | 163 |
| Estimated 2026 | ~300 |
| Median Age | 50.0 |
| Total Households | 84 |
| Family Households | 37 |
| Average Household Size | 1.94 |
| Diversity Index | N/A (N/A) |
Race & Ethnicity
| White | 162 |
| Black or African American | 0 |
| Asian | 0 |
| Hispanic or Latino | 0 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 61 |
| German | 45 |
| Irish | 20 |
| American | 16 |
| English | 14 |
| Other groups | 8 |
| Italian | 4 |
| Welsh | 2 |
| European | 2 |
| Polish | 2 |
Language
| English Only | 161 |
| Spanish | 0 |
| Population 5+ | 161 |
Veterans
| Veterans | 21 |
| Population 18+ | 139 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Petrolia, Pennsylvania.