| Index | Smithtown | New York | National |
| Income per capita | $58,743 | $34,212 | $29,829 |
| Median household income | $137,625 | $60,741 | $55,322 |
| Median income owner occupied | $144,487 | $83,277 | $70,586 |
| Median income renter occupied | $31,136 | $38,983 | $35,192 |
| Median earnings male | $84,441 | $40,464 | $36,919 |
| Median earnings female | $45,324 | $30,906 | $26,250 |
| Unemployment rate | 1.8% | 4.8% | 4.7% |
| Poverty level | 3.3% | 15.5% | 15.1% |
| Labour Type | Male | Female |
| Construction industry | 12.8% | 12.8% |
| Manufacturing sector | 6.9% | 6.9% |
| Financial & insurance services | 10.4% | 10.4% |
| Wholesale & retail services | 20.7% | 20.7% |
| Public administration | 7.7% | 7.7% |
| Transportation, warehousing & utilities | 3.3% | 3.3% |
| Education, health & social services | 13.7% | 13.7% |
| Other | 20.6% | 20.6% |
| 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% |
| Old Field, NY | 915 | $250,000 | 351.9% |
| Head of the Harbor, NY | 1,454 | $215,833 | 290.1% |
| Smithtown, NY | 26,197 | $137,625 | 148.8% |
| City | Population | Household Income | National Avg. |
| Troy, OH | 26,176 | $61,216 | 10.7% |
| Clarksburg, MD | 26,234 | $149,173 | 169.6% |
| Galt, CA | 26,235 | $73,969 | 33.7% |
| Belmont, MA | 26,158 | $140,500 | 154.0% |
| University Park, FL | 26,150 | $41,773 | 24.5% |
| Smithtown, NY | 26,197 | $137,625 | 148.8% |
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