| Zip Code : | 33050 |
| City : | Duck Key, Key Colony Beach city, Marathon city |
| County : | Monroe County |
| State : | Florida (FL) |
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| Land Area : | 9.09 sq mi |
| Water Area : | 38.43 sq mi |
| Latitude : | 24.7474874 |
| Longitude : | -81.0103264 |
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| Population (2010): | 8,922 |
| Population Estimate (2012) : | 8,923 |
| Population Density : | 981.90/sq mi |
| Housing Units (2012) : | 7,057 |
| Median Household Income (2012) : | $45,783 (Florida : $47,309, USA : $53,046) |
| Median Family Income (2012) : | $55,769 (Florida : $57,128, USA : $64,585) |
| Median House Price (2012) : | $347,300 (Florida : $170,800, USA : $181,400) |