| Index | Key Colony Beach | Florida | National |
| Income per capita | $85,354 | $27,598 | $29,829 |
| Median household income | $91,899 | $48,900 | $55,322 |
| Median income owner occupied | $92,224 | $59,209 | $70,586 |
| Median income renter occupied | $71,944 | $34,622 | $35,192 |
| Median earnings male | $74,750 | $31,444 | $36,919 |
| Median earnings female | $31,597 | $25,332 | $26,250 |
| Unemployment rate | 0.0% | 4.9% | 4.7% |
| 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 | 761 | $107,625 | 94.5% |
| Marathon, FL | 8,746 | $56,008 | 1.2% |
| Layton, FL | 107 | $51,442 | 7.0% |
| Key Colony Beach, FL | 523 | $91,899 | 66.1% |
| City | Population | Household Income | National Avg. |
| Hornersville, MO | 523 | $38,365 | 30.7% |
| Bogue Chitto CDP (Lincoln County), MS | 523 | $0 | 100.0% |
| Friendship, OH | 523 | $0 | 100.0% |
| Buckhorn, PA | 523 | $48,813 | 11.8% |
| Kenefick, TX | 523 | $64,667 | 16.9% |
| Key Colony Beach, FL | 523 | $91,899 | 66.1% |
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