| City : | Petrolia Borough |
| County : | Butler County |
| State : | Pennsylvania (PA) |
| | |
| Land Area : | 0.40 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 41.0216438 |
| Longitude : | -79.7167796 |
| | |
| Population (2010): | 212 |
| Population Estimate (2012) : | 202 |
| Population Density : | 535.21/sq mi |
| Housing Units (2012) : | 100 |
| Median Household Income (2012) : | $40,625 (Pennsylvania : $52,267, USA : $53,046) |
| Median Family Income (2012) : | $42,222 (Pennsylvania : $65,980, USA : $64,585) |
| Median House Price (2012) : | $50,000 (Pennsylvania : $164,900, USA : $181,400) |