| City : | West Islip |
| County : | Suffolk County |
| State : | New York (NY) |
| Land Area : | 6.33 sq mi |
| Water Area : | 0.44 sq mi |
| Latitude : | 40.7111672 |
| Longitude : | -73.2929692 |
| Population (2010): | 28,335 |
| Population Estimate (2012) : | 28,145 |
| Population Density : | 4,477.20/sq mi |
| Housing Units (2012) : | 9,266 |
| Median Household Income (2012) : | $107,007 (New York : $57,683, USA : $53,046) |
| Median Family Income (2012) : | $117,252 (New York : $69,968, USA : $64,585) |
| Median House Price (2012) : | $429,500 (New York : $295,300, USA : $181,400) |