USA
> Pennsylvania > Zip Code 18951
| Zip Code : | 18951 |
| City : | Milford Square, Quakertown borough, Spinnerstown, Trumbauersville borough |
| County : | Bucks County, Lehigh County |
| State : | Pennsylvania (PA) |
| Land Area : | 66.62 sq mi |
| Water Area : | 1.04 sq mi |
| Latitude : | 40.4523595 |
| Longitude : | -75.3489424 |
| Population (2010): | 34,651 |
| Population Estimate (2012) : | 34,511 |
| Population Density : | 520.15/sq mi |
| Housing Units (2012) : | 13,675 |
| Median Household Income (2012) : | $68,127 (Pennsylvania : $52,267, USA : $53,046) |
| Median Family Income (2012) : | $81,090 (Pennsylvania : $65,980, USA : $64,585) |
| Median House Price (2012) : | $253,700 (Pennsylvania : $164,900, USA : $181,400) |