| Index | Fenwick | Connecticut | National |
| Income per capita | $338,504 | $58,644 | $44,883 |
| Median household income | $172,372 | $105,898 | $81,333 |
| Median income owner occupied | $0 | $143,532 | $106,172 |
| Median income renter occupied | $0 | $56,168 | $52,080 |
| Median earnings male | $0 | $67,487 | $54,343 |
| Median earnings female | $0 | $47,151 | $38,439 |
| Unemployment rate | 0.0% | 5.6% | 4.9% |
| Poverty level | 6.8% | 10.4% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 0.0% | 0.0% |
| Manufacturing sector | 10.0% | 10.0% |
| Financial & insurance services | 40.0% | 40.0% |
| Wholesale & retail services | 10.0% | 10.0% |
| Public administration | 0.0% | 0.0% |
| Transportation, warehousing & utilities | 0.0% | 0.0% |
| Education, health & social services | 20.0% | 20.0% |
| Other | 20.0% | 20.0% |
| City | Population | Household Income | National Avg. |
| Shelter Island Heights, NY | 791 | $182,907 | 124.9% |
| Higganum, CT | 1,831 | $166,567 | 104.8% |
| Essex Village, CT | 2,819 | $150,882 | 85.5% |
| Shelter Island, NY | 2,020 | $147,893 | 81.8% |
| Gales Ferry, CT | 1,124 | $146,463 | 80.1% |
| Fenwick, CT | 46 | $172,372 | 111.9% |
| City | Population | Household Income | National Avg. |
| Ocotillo, CA | 46 | $0 | 100.0% |
| Volcano, CA | 46 | $0 | 100.0% |
| Whitley Gardens, CA | 46 | $0 | 100.0% |
| Balltown, IA | 46 | $0 | 100.0% |
| Elmdale, KS | 46 | $65,362 | 19.6% |
| Fenwick, CT | 46 | $172,372 | 111.9% |