Millville, DE
Full City Profile · Delaware · Sussex County County
4.3
/5.0
A
Great
2,059
Population
807/sq mi density
$93,409
Median Income
$63,906 per capita
$453,400
Home Value
$525,044 Zillow
$1,730
Median Rent
18.1% income on rent
56°F
Avg Temperature
A
Overall
4.3 / 5.0
Strong
A
Economy
4.4 / 5.0
$93,409 median income, 4.9% unemployment
B+
Affordability
3.9 / 5.0
$453,400 home value, $1,730/mo rent
A+
Education
4.6 / 5.0
44.7% bachelor's degree or higher
Millville enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 36°F in January while summers reach 76°F in July. Annual precipitation totals 42.6 inches. The area receives 10.5 inches of snow annually. Air quality is rated Good with a median AQI of 40.
Temperature
36°F Jan (2°C)
76°F Jul (25°C)
| Annual Average | 56.0°F |
| 4% above US avg | |
| January Average | 36°F (2°C) |
| July Average | 76°F (25°C) |
Geography
| Elevation | 13 ft (4 m) |
| Area | 2.5 sq mi (6.5 km²) |
| Population Density | 807/sq mi |
| Coordinates | 38.5370°N, 75.1294°W |
| Timezone | America/New_York |
| County | Sussex County County |
| Nearest Airport | Salisbury-Ocean City Wicomico Regional (SBY) 25 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 40.0 |
| Rating | Good |
| Good Days % | 81.6% |
| Unhealthy Days | 0 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0463 ppm |
| SO₂ (Sulfur Dioxide) | 0.20 ppb |
| PM2.5 (Fine Particles) | 8.6 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 94.2 / 100 |
| Social Vulnerability | 70.4 / 100 |
| Community Resilience | 59.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively High |
| Earthquake | Relatively Low |
| Wildfire | Relatively Low |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very High |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Very Low |
| Coastal Flood | Very High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1840 | PHILADELPHIA, PENNSYLVANIA | Earthquake | - | - | 141 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 36°F (2°C) | 3.4 in | Coldest |
| February | 38°F (3°C) | 3.0 in | Driest |
| March | 44°F (7°C) | 3.9 in | |
| April | 53°F (12°C) | 3.0 in | |
| May | 62°F (17°C) | 3.8 in | |
| June | 71°F (22°C) | 3.3 in | |
| July | 76°F (25°C) | 3.8 in | Warmest |
| August | 75°F (24°C) | 3.8 in | |
| September | 69°F (21°C) | 3.9 in | |
| October | 58°F (15°C) | 4.0 in | Wettest |
| November | 48°F (9°C) | 3.2 in | |
| December | 41°F (5°C) | 3.6 in |
Millville has a seasonal temperature swing of 40°F / from 36°F in January to 76°F in July. Total annual precipitation is 42.6 inches, with October being the wettest month (4.0") and February the driest (3.0").