| Index | West Islip | New York | National |
| Income per capita | $50,702 | $34,212 | $29,829 |
| Median household income | $132,415 | $60,741 | $55,322 |
| Median income owner occupied | $136,645 | $83,277 | $70,586 |
| Median income renter occupied | $74,625 | $38,983 | $35,192 |
| Median earnings male | $62,833 | $40,464 | $36,919 |
| Median earnings female | $49,724 | $30,906 | $26,250 |
| Unemployment rate | 2.7% | 4.8% | 4.7% |
| Poverty level | 3.4% | 15.5% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 11.1% | 11.1% |
| Manufacturing sector | 5.6% | 5.6% |
| Financial & insurance services | 10.6% | 10.6% |
| Wholesale & retail services | 15.5% | 15.5% |
| Public administration | 8.6% | 8.6% |
| Transportation, warehousing & utilities | 11.4% | 11.4% |
| Education, health & social services | 13.3% | 13.3% |
| Other | 22.2% | 22.2% |
| City | Population | Household Income | National Avg. |
| Huntington Bay, NY | 1,614 | $250,001 | 351.9% |
| Laurel Hollow, NY | 1,967 | $250,001 | 351.9% |
| Brookville, NY | 3,599 | $250,001 | 351.9% |
| Cold Spring Harbor, NY | 2,864 | $250,001 | 351.9% |
| Mill Neck, NY | 1,178 | $217,917 | 293.9% |
| West Islip, NY | 26,614 | $132,415 | 139.4% |
| City | Population | Household Income | National Avg. |
| Alvin, TX | 26,592 | $57,114 | 3.2% |
| Daphne, AL | 26,578 | $71,105 | 28.5% |
| Garden City, MI | 26,565 | $57,011 | 3.1% |
| Brownsburg, IN | 26,560 | $89,089 | 61.0% |
| Wooster, OH | 26,557 | $52,366 | 5.3% |
| West Islip, NY | 26,614 | $132,415 | 139.4% |