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> New Hampshire > Zip Code 03857
| Zip Code : | 03857 |
| City : | Newmarket |
| County : | Rockingham County |
| State : | New Hampshire (NH) |
| Land Area : | 12.60 sq mi |
| Water Area : | 1.62 sq mi |
| Latitude : | 43.0714240 |
| Longitude : | -70.9513647 |
| Population (2010): | 9,006 |
| Population Estimate (2012) : | 9,002 |
| Population Density : | 714.83/sq mi |
| Housing Units (2012) : | 4,164 |
| Median Household Income (2012) : | $60,777 (New Hampshire : $64,925, USA : $53,046) |
| Median Family Income (2012) : | $84,764 (New Hampshire : $79,488, USA : $64,585) |
| Median House Price (2012) : | $270,000 (New Hampshire : $245,600, USA : $181,400) |