| Index | Groton | Connecticut | National |
| Income per capita | $50,531 | $58,644 | $44,883 |
| Median household income | $78,063 | $105,898 | $81,333 |
| Median income owner occupied | $131,656 | $143,532 | $106,172 |
| Median income renter occupied | $53,669 | $56,168 | $52,080 |
| Median earnings male | $57,090 | $67,487 | $54,343 |
| Median earnings female | $43,544 | $47,151 | $38,439 |
| Unemployment rate | 4.3% | 5.6% | 4.9% |
| Poverty level | 13.1% | 10.4% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 6.6% | 6.6% |
| Manufacturing sector | 25.3% | 25.3% |
| Financial & insurance services | 1.3% | 1.3% |
| Wholesale & retail services | 8.3% | 8.3% |
| Public administration | 8.0% | 8.0% |
| Transportation, warehousing & utilities | 1.9% | 1.9% |
| Education, health & social services | 15.2% | 15.2% |
| Other | 33.4% | 33.4% |
| City | Population | Household Income | National Avg. |
| Noank, CT | 1,502 | $210,381 | 158.7% |
| Mashantucket, CT | 230 | $194,940 | 139.7% |
| Watch Hill, RI | 202 | $176,588 | 117.1% |
| Fenwick, CT | 46 | $172,372 | 111.9% |
| Mystic, CT | 4,893 | $169,110 | 107.9% |
| Groton, CT | 9,279 | $78,063 | 4.0% |
| City | Population | Household Income | National Avg. |
| Boulder Hill, IL | 9,282 | $103,668 | 27.5% |
| LaSalle, IL | 9,282 | $78,542 | 3.4% |
| Roxborough Park, CO | 9,283 | $209,117 | 157.1% |
| Sturgeon Bay, WI | 9,274 | $84,584 | 4.0% |
| Cameron, MO | 9,284 | $85,784 | 5.5% |
| Groton, CT | 9,279 | $78,063 | 4.0% |