| Index | Port Jefferson | New York | National |
| Income per capita | $83,964 | $51,391 | $44,883 |
| Median household income | $175,324 | $89,985 | $81,333 |
| Median income owner occupied | $194,505 | $125,982 | $106,172 |
| Median income renter occupied | $117,190 | $58,659 | $52,080 |
| Median earnings male | $110,839 | $59,465 | $54,343 |
| Median earnings female | $66,701 | $44,739 | $38,439 |
| Unemployment rate | 1.8% | 5.0% | 4.9% |
| Poverty level | 4.6% | 15.5% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 10.8% | 10.8% |
| Manufacturing sector | 5.9% | 5.9% |
| Financial & insurance services | 4.6% | 4.6% |
| Wholesale & retail services | 8.1% | 8.1% |
| Public administration | 5.0% | 5.0% |
| Transportation, warehousing & utilities | 3.4% | 3.4% |
| Education, health & social services | 30.6% | 30.6% |
| Other | 29.2% | 29.2% |
| City | Population | Household Income | National Avg. |
| Old Field, NY | 949 | $377,288 | 363.9% |
| Head of the Harbor, NY | 1,506 | $323,823 | 298.1% |
| Belle Terre, NY | 813 | $304,762 | 274.7% |
| Poquott, NY | 1,135 | $271,972 | 234.4% |
| Southport, CT | 1,747 | $263,111 | 223.5% |
| Port Jefferson, NY | 8,248 | $175,324 | 115.6% |
| City | Population | Household Income | National Avg. |
| Groesbeck, OH | 8,249 | $88,189 | 8.4% |
| Kitimat, BC | 8,251 | n/a | |
| Conshohocken, PA | 8,252 | $150,854 | 85.5% |
| Trail, BC | 8,243 | n/a | |
| Chestnut Ridge, NY | 8,254 | $140,408 | 72.6% |
| Port Jefferson, NY | 8,248 | $175,324 | 115.6% |