| Index | Old Greenwich | Connecticut | National |
| Income per capita | $162,953 | $58,644 | $44,883 |
| Median household income | $352,675 | $105,898 | $81,333 |
| Median income owner occupied | $374,937 | $143,532 | $106,172 |
| Median income renter occupied | $237,814 | $56,168 | $52,080 |
| Median earnings male | $292,889 | $67,487 | $54,343 |
| Median earnings female | $76,323 | $47,151 | $38,439 |
| Unemployment rate | 2.5% | 5.6% | 4.9% |
| Poverty level | 2.4% | 10.4% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 7.1% | 7.1% |
| Manufacturing sector | 2.0% | 2.0% |
| Financial & insurance services | 37.2% | 37.2% |
| Wholesale & retail services | 7.4% | 7.4% |
| Public administration | 1.7% | 1.7% |
| Transportation, warehousing & utilities | 1.7% | 1.7% |
| Education, health & social services | 2.4% | 2.4% |
| Other | 35.4% | 35.4% |
| City | Population | Household Income | National Avg. |
| Laurel Hollow, NY | 2,019 | $379,136 | 366.2% |
| Scarsdale, NY | 18,390 | $378,602 | 365.5% |
| Sands Point, NY | 2,894 | $376,615 | 363.1% |
| Plandome, NY | 1,397 | $375,731 | 362.0% |
| Brookville, NY | 3,716 | $373,481 | 359.2% |
| Old Greenwich, CT | 7,189 | $352,675 | 333.6% |
| City | Population | Household Income | National Avg. |
| Oakdale, NY | 7,188 | $155,003 | 90.6% |
| Pelham, NY | 7,190 | $225,148 | 176.8% |
| Pinehurst, MA | 7,184 | $160,706 | 97.6% |
| Souderton, PA | 7,184 | $102,196 | 25.7% |
| Huntingdon, PA | 7,182 | $69,146 | 15.0% |
| Old Greenwich, CT | 7,189 | $352,675 | 333.6% |