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Trenton, NJ
Full City Profile · New Jersey · Mercer County County
2.7
/5.0
C+
Fair
89,966
Population
11,822/sq mi density
$47,102
Median Income
$28,026 per capita
$122,500
Home Value
$342,790 Zillow
$1,224
Median Rent
34.9% income on rent
57°F
Avg Temperature
276 sunny days/yr
1,123
Violent Crime/100K
2,094 property/100K
C+
Overall
2.7 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Economy
2.5 / 5.0
$47,102 median income, 6.3% unemployment
A+
Affordability
5.0 / 5.0
$122,500 home value, $1,224/mo rent
F
Safety
1.0 / 5.0
1,123 violent crimes/100K (195% above avg)
C
Education
2.3 / 5.0
16.7% bachelor's degree or higher
Trenton enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 42°F in January while summers reach 78°F in July. The area gets 276 sunny days per year. Annual precipitation totals 49.4 inches. The area receives 3.7 inches of snow annually. Air quality is rated Good with a median AQI of 39.
Temperature
42°F Jan (5°C)
78°F Jul (25°C)
| Annual Average | 56.7°F |
| 5% above US avg | |
| January Average | 42°F (5°C) |
| July Average | 78°F (25°C) |
| Sunny Days | 276 days/yr |
Geography
| Elevation | 59 ft (18 m) |
| Area | 8.2 sq mi (21.1 km²) |
| Population Density | 11,822/sq mi |
| Coordinates | 40.2238°N, 74.7636°W |
| Timezone | America/New_York |
| County | Mercer County County |
| Nearest Airport | South Jersey Regional (LLY) 20 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 39.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0450 ppm |
| PM2.5 (Fine Particles) | 9.6 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 95.4 / 100 |
| Social Vulnerability | 46.9 / 100 |
| Community Resilience | 70.2 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively High |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively Low |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Very High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very High |
| Lightning | Relatively High |
| Ice Storm | Very High |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
| Coastal Flood | Relatively Low |
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 | — | — | 50 km |
| 1840 | PHILADELPHIA, PENNSYLVANIA | Earthquake | — | — | 60 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (5°C) | 3.7 in | |
| February | 33°F (1°C) | 2.9 in | Coldest, Driest |
| March | 41°F (5°C) | 4.0 in | |
| April | 51°F (11°C) | 3.9 in | |
| May | 62°F (16°C) | 4.4 in | |
| June | 70°F (21°C) | 3.9 in | |
| July | 78°F (25°C) | 4.8 in | Warmest, Wettest |
| August | 74°F (23°C) | 4.5 in | |
| September | 67°F (19°C) | 4.1 in | |
| October | 55°F (13°C) | 3.5 in | |
| November | 46°F (8°C) | 3.8 in | |
| December | 36°F (2°C) | 3.7 in |
Trenton has a seasonal temperature swing of 45°F / from 33°F in February to 78°F in July. Total annual precipitation is 47.1 inches, with July being the wettest month (4.8") and February the driest (2.9").