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> Pennsylvania > Zip Code 18101
| Zip Code : | 18101 |
| City : | Allentown city |
| County : | Lehigh County |
| State : | Pennsylvania (PA) |
| Land Area : | 0.35 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 40.6026579 |
| Longitude : | -75.4692361 |
| Population (2010): | 3,897 |
| Population Estimate (2012) : | 3,773 |
| Population Density : | 11,166.19/sq mi |
| Housing Units (2012) : | 1,821 |
| Median Household Income (2012) : | $14,600 (Pennsylvania : $52,267, USA : $53,046) |
| Median Family Income (2012) : | $20,763 (Pennsylvania : $65,980, USA : $64,585) |
| Median House Price (2012) : | $114,300 (Pennsylvania : $164,900, USA : $181,400) |