| Index | Key Colony Beach | Florida | National |
| Income per capita | $129,412 | $40,554 | $44,883 |
| Median household income | $135,757 | $72,078 | $81,333 |
| Median income owner occupied | $138,141 | $88,075 | $106,172 |
| Median income renter occupied | $107,454 | $51,794 | $52,080 |
| Median earnings male | $109,729 | $45,688 | $54,343 |
| Median earnings female | $45,747 | $37,493 | $38,439 |
| Unemployment rate | 0.0% | 5.2% | 4.9% |
| Poverty level | 1.9% | 16.1% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 6.1% | 6.1% |
| Manufacturing sector | 0.0% | 0.0% |
| Financial & insurance services | 7.9% | 7.9% |
| Wholesale & retail services | 0.0% | 0.0% |
| Public administration | 15.8% | 15.8% |
| Transportation, warehousing & utilities | 13.2% | 13.2% |
| Education, health & social services | 15.8% | 15.8% |
| Other | 41.2% | 41.2% |
| City | Population | Household Income | National Avg. |
| Duck Key, FL | 780 | $158,074 | 94.4% |
| Marathon, FL | 8,934 | $83,411 | 2.6% |
| Layton, FL | 110 | $76,077 | 6.5% |
| Key Colony Beach, FL | 543 | $135,757 | 66.9% |
| City | Population | Household Income | National Avg. |
| Strasburg, IL | 543 | $93,654 | 15.1% |
| Danville, MD | 543 | $3,748 | 95.4% |
| Bull Creek, MO | 543 | $41,117 | 49.4% |
| Urich, MO | 543 | $51,833 | 36.3% |
| Polkville, NC | 543 | $61,390 | 24.5% |
| Key Colony Beach, FL | 543 | $135,757 | 66.9% |