| Index | Islip | New York | National |
| Income per capita | $48,380 | $34,212 | $29,829 |
| Median household income | $109,857 | $60,741 | $55,322 |
| Median income owner occupied | $118,804 | $83,277 | $70,586 |
| Median income renter occupied | $52,500 | $38,983 | $35,192 |
| Median earnings male | $63,811 | $40,464 | $36,919 |
| Median earnings female | $40,966 | $30,906 | $26,250 |
| Unemployment rate | 3.0% | 4.8% | 4.7% |
| Poverty level | 5.5% | 15.5% | 15.1% |
| Labour Type | Male | Female |
| Construction industry | 11.1% | 11.1% |
| Manufacturing sector | 5.9% | 5.9% |
| Financial & insurance services | 4.4% | 4.4% |
| Wholesale & retail services | 18.4% | 18.4% |
| Public administration | 5.1% | 5.1% |
| Transportation, warehousing & utilities | 11.9% | 11.9% |
| Education, health & social services | 10.1% | 10.1% |
| Other | 31.2% | 31.2% |
| City | Population | Household Income | National Avg. |
| Cold Spring Harbor, NY | 2,864 | $250,001 | 351.9% |
| Huntington Bay, NY | 1,614 | $250,001 | 351.9% |
| Laurel Hollow, NY | 1,967 | $250,001 | 351.9% |
| Head of the Harbor, NY | 1,454 | $215,833 | 290.1% |
| Lloyd Harbor, NY | 3,663 | $203,846 | 268.5% |
| Islip, NY | 16,965 | $109,857 | 98.6% |
| City | Population | Household Income | National Avg. |
| Phoenixville, PA | 16,961 | $85,550 | 54.6% |
| Edmundston, NB | 16,970 | n/a | |
| Ojus, FL | 16,972 | $48,248 | 12.8% |
| Poplar Bluff, MO | 16,979 | $35,603 | 35.6% |
| La Marque, TX | 16,983 | $50,464 | 8.8% |
| Islip, NY | 16,965 | $109,857 | 98.6% |
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