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Hockessin, DE
Full City Profile · Delaware · Chester County County
4.0
/5.0
A
Great
13,608
Population
1,355/sq mi density
$172,695
Median Income
$73,706 per capita
$550,200
Home Value
$589,990 Zillow
$2,980
Median Rent
30.9% income on rent
53°F
Avg Temperature
290 sunny days/yr
356
Violent Crime/100K
2,025 property/100K
A
Overall
4.0 / 5.0
Strong
A+
Economy
5.0 / 5.0
$172,695 median income, 1.6% unemployment
A+
Affordability
4.9 / 5.0
$550,200 home value, $2,980/mo rent
F
Safety
1.0 / 5.0
356 violent crimes/100K
A+
Education
5.0 / 5.0
65.9% bachelor's degree or higher
Hockessin experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 31°F in January while summers reach 76°F in July. The area gets 290 sunny days per year. Annual precipitation totals 50.3 inches. The area receives 12.0 inches of snow annually. Air quality is rated Good with a median AQI of 41.
Temperature
31°F Jan (-1°C)
76°F Jul (24°C)
| Annual Average | 53.4°F |
| 1% below US avg | |
| January Average | 31°F (-1°C) |
| July Average | 76°F (24°C) |
| Sunny Days | 290 days/yr |
Geography
| Elevation | 346 ft (105 m) |
| Area | 10.1 sq mi (26.0 km²) |
| Population Density | 1,355/sq mi |
| Coordinates | 39.7839°N, 75.6807°W |
| Timezone | America/New_York |
| County | Chester County County |
| Nearest Airport | Philadelphia International (PHL) 24 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0450 ppm |
| PM2.5 (Fine Particles) | 9.5 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 91.9 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 85.2 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Relatively Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very High |
| Lightning | Relatively High |
| Ice Storm | Relatively High |
| Drought | Relatively High |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
| Coastal Flood | No Rating |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
2 tsunamis recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1895 | HIGH BRIDGE, NJ | Earthquake | — | — | 119 km |
| 1840 | PHILADELPHIA, PENNSYLVANIA | Earthquake | — | — | 41 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 31°F (-1°C) | 3.6 in | Coldest |
| February | 33°F (0°C) | 2.8 in | Driest |
| March | 42°F (5°C) | 3.9 in | |
| April | 51°F (11°C) | 3.7 in | |
| May | 61°F (16°C) | 4.4 in | |
| June | 70°F (21°C) | 4.1 in | |
| July | 76°F (24°C) | 4.6 in | Warmest, Wettest |
| August | 74°F (23°C) | 4.0 in | |
| September | 67°F (19°C) | 4.3 in | |
| October | 55°F (13°C) | 3.4 in | |
| November | 46°F (8°C) | 3.6 in | |
| December | 36°F (2°C) | 3.7 in |
Hockessin has a seasonal temperature swing of 45°F / from 31°F in January to 76°F in July. Total annual precipitation is 46.1 inches, with July being the wettest month (4.6") and February the driest (2.8").