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> Pennsylvania > Zip Code 18631
| Zip Code : | 18631 |
| City : | Mifflinville |
| County : | Columbia County |
| State : | Pennsylvania (PA) |
| Land Area : | 1.72 sq mi |
| Water Area : | 0.16 sq mi |
| Latitude : | 41.0299068 |
| Longitude : | -76.3043738 |
| Population (2010): | 1,286 |
| Population Estimate (2012) : | 1,194 |
| Population Density : | 749.18/sq mi |
| Housing Units (2012) : | 580 |
| Median Household Income (2012) : | $57,000 (Pennsylvania : $52,267, USA : $53,046) |
| Median Family Income (2012) : | $56,813 (Pennsylvania : $65,980, USA : $64,585) |
| Median House Price (2012) : | $146,900 (Pennsylvania : $164,900, USA : $181,400) |