North Star, DE
Full City Profile · Delaware · New Castle County County
4.8
/5.0
A+
Excellent
8,178
Population
1,203/sq mi density
$167,664
Median Income
$76,200 per capita
$566,500
Home Value
$589,990 Zillow
52°F
Avg Temperature
A+
Overall
4.8 / 5.0
Strong
A+
Economy
4.7 / 5.0
$167,664 median income, 3.8% unemployment
A+
Affordability
4.8 / 5.0
$566,500 home value, /mo rent
A+
Education
5.0 / 5.0
70.7% bachelor's degree or higher
North Star experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 31°F in January while summers reach 74°F in July. Annual precipitation totals 47.1 inches. The area receives 20.2 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
31°F Jan (-1°C)
74°F Jul (23°C)
| Annual Average | 52.3°F |
| 3% below US avg | |
| January Average | 31°F (-1°C) |
| July Average | 74°F (23°C) |
Geography
| Elevation | 348 ft (106 m) |
| Area | 6.8 sq mi (17.6 km²) |
| Population Density | 1,203/sq mi |
| Coordinates | 39.7525°N, 75.7349°W |
| Timezone | America/New_York |
| County | New Castle County County |
| Nearest Airport | Philadelphia International (PHL) 28 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
| Good Days % | 67.2% |
| Unhealthy Days | 4 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0452 ppm |
| NO₂ (Nitrogen Dioxide) | 13.7 ppb |
| SO₂ (Sulfur Dioxide) | 0.34 ppb |
| PM2.5 (Fine Particles) | 8.9 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 95.3 / 100 |
| Social Vulnerability | 28.5 / 100 |
| Community Resilience | 83.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very High |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
| Coastal Flood | Relatively High |
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 | - | - | 125 km |
| 1840 | PHILADELPHIA, PENNSYLVANIA | Earthquake | - | - | 46 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) | 3.1 in | Driest |
| March | 40°F (5°C) | 4.4 in | |
| April | 51°F (10°C) | 3.8 in | |
| May | 61°F (16°C) | 3.6 in | |
| June | 69°F (21°C) | 4.4 in | |
| July | 74°F (23°C) | 4.2 in | Warmest |
| August | 72°F (22°C) | 4.3 in | |
| September | 65°F (18°C) | 4.5 in | Wettest |
| October | 54°F (12°C) | 4.0 in | |
| November | 44°F (7°C) | 3.2 in | |
| December | 35°F (2°C) | 4.0 in |
North Star has a seasonal temperature swing of 43°F / from 31°F in January to 74°F in July. Total annual precipitation is 47.1 inches, with September being the wettest month (4.5") and February the driest (3.1").