| Index | Smithtown | New York | National |
| Income per capita | $87,729 | $51,391 | $44,883 |
| Median household income | $201,068 | $89,985 | $81,333 |
| Median income owner occupied | $215,693 | $125,982 | $106,172 |
| Median income renter occupied | $46,486 | $58,659 | $52,080 |
| Median earnings male | $123,765 | $59,465 | $54,343 |
| Median earnings female | $66,224 | $44,739 | $38,439 |
| Unemployment rate | 1.9% | 5.0% | 4.9% |
| 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. |
| Laurel Hollow, NY | 2,019 | $379,136 | 366.2% |
| Old Field, NY | 949 | $377,288 | 363.9% |
| Cold Spring Harbor, NY | 2,967 | $371,740 | 357.1% |
| Huntington Bay, NY | 1,646 | $365,621 | 349.5% |
| Head of the Harbor, NY | 1,506 | $323,823 | 298.1% |
| Smithtown, NY | 27,027 | $201,068 | 147.2% |
| City | Population | Household Income | National Avg. |
| Sun City West, AZ | 27,025 | $82,316 | 1.2% |
| East St. Louis, IL | 27,033 | $36,067 | 55.7% |
| Canyon Lake, TX | 27,035 | $115,063 | 41.5% |
| Clarksburg, MD | 27,008 | $223,878 | 175.3% |
| Bessemer, AL | 27,005 | $44,482 | 45.3% |
| Smithtown, NY | 27,027 | $201,068 | 147.2% |