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> Pennsylvania > Zip Code 16057
| Zip Code : | 16057 |
| City : | Slippery Rock borough, Slippery Rock University, West Liberty borough |
| County : | Lawrence County, Butler County, Mercer County |
| State : | Pennsylvania (PA) |
| Land Area : | 87.24 sq mi |
| Water Area : | 0.63 sq mi |
| Latitude : | 41.0340737 |
| Longitude : | -80.0603005 |
| Population (2010): | 13,909 |
| Population Estimate (2012) : | 13,635 |
| Population Density : | 159.44/sq mi |
| Housing Units (2012) : | 5,236 |
| Median Household Income (2012) : | $44,159 (Pennsylvania : $52,267, USA : $53,046) |
| Median Family Income (2012) : | $60,893 (Pennsylvania : $65,980, USA : $64,585) |
| Median House Price (2012) : | $163,900 (Pennsylvania : $164,900, USA : $181,400) |