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Big Coppitt Key, FL
Full City Profile · Florida · Monroe County County
3.1
/5.0
B
Good
3,333
Population
2,898/sq mi density
$104,306
Median Income
$47,095 per capita
$590,700
Home Value
$763,403 Zillow
$2,274
Median Rent
30.4% income on rent
79°F
Avg Temperature
330 sunny days/yr
788
Violent Crime/100K
5,102 property/100K
B
Overall
3.1 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.9 / 5.0
$104,306 median income, 2.5% unemployment
B
Affordability
3.5 / 5.0
$590,700 home value, $2,274/mo rent
F
Safety
1.0 / 5.0
788 violent crimes/100K (107% above avg)
C+
Education
2.9 / 5.0
23.2% bachelor's degree or higher
Big Coppitt Key has a warm climate with an average annual temperature of 79°F (26°C). Winters average 71°F in January while summers reach 85°F in July. The area gets 330 sunny days per year. Annual precipitation totals 43.6 inches. The area receives 0.0 inches of snow annually. Air quality is rated Good with a median AQI of 41.
Temperature
71°F Jan (21°C)
85°F Jul (30°C)
| Annual Average | 78.9°F |
| 46% above US avg | |
| January Average | 71°F (21°C) |
| July Average | 85°F (30°C) |
| Sunny Days | 330 days/yr |
Geography
| Elevation | 3 ft (1 m) |
| Area | 1.8 sq mi (4.8 km²) |
| Population Density | 2,898/sq mi |
| Coordinates | 24.5802°N, 81.6522°W |
| Timezone | America/New_York |
| County | Monroe County County |
| Nearest Airport | Key West International (EYW) 7 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 91.6 / 100 |
| Social Vulnerability | 53.9 / 100 |
| Community Resilience | 29.4 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Relatively High |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | No Rating |
| Lightning | Relatively High |
| Drought | No Rating |
| Cold Wave | Very Low |
| Landslide | Very Low |
| Coastal Flood | Very High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 71°F (21°C) | 2.4 in | |
| February | 70°F (21°C) | 1.7 in | Coldest, Driest |
| March | 73°F (23°C) | 1.8 in | |
| April | 76°F (24°C) | 1.9 in | |
| May | 80°F (26°C) | 3.9 in | |
| June | 82°F (28°C) | 5.8 in | |
| July | 85°F (30°C) | 3.8 in | Warmest |
| August | 84°F (29°C) | 5.7 in | |
| September | 83°F (28°C) | 6.0 in | Wettest |
| October | 80°F (26°C) | 4.6 in | |
| November | 75°F (24°C) | 2.1 in | |
| December | 71°F (22°C) | 2.1 in |
Big Coppitt Key has a seasonal temperature swing of 15°F / from 70°F in February to 85°F in July. Total annual precipitation is 41.7 inches, with September being the wettest month (6.0") and February the driest (1.7").