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Franklin Center, NJ
Full City Profile · New Jersey · Somerset County County
3.8
/5.0
B+
Good
5,770
Population
874/sq mi density
$138,643
Median Income
$78,490 per capita
$565,200
Home Value
$443,309 Zillow
$2,588
Median Rent
26.9% income on rent
51°F
Avg Temperature
275 sunny days/yr
22
Violent Crime/100K
761 property/100K
B+
Overall
3.8 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.9 / 5.0
$138,643 median income, 2.8% unemployment
A
Affordability
4.4 / 5.0
$565,200 home value, $2,588/mo rent
F
Safety
1.0 / 5.0
22 violent crimes/100K
A+
Education
5.0 / 5.0
68.2% bachelor's degree or higher
Franklin Center experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 29°F in January while summers reach 74°F in July. The area gets 275 sunny days per year. Annual precipitation totals 46.7 inches. Air quality is rated Good with a median AQI of 39.
Temperature
29°F Jan (-2°C)
74°F Jul (23°C)
| Annual Average | 51.1°F |
| 5% below US avg | |
| January Average | 29°F (-2°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 84 ft (26 m) |
| Area | 6.6 sq mi (17.1 km²) |
| Population Density | 874/sq mi |
| Coordinates | 40.5315°N, 74.5414°W |
| Timezone | America/New_York |
| County | Somerset County County |
| Nearest Airport | Central Jersey Regional (JVI) 3 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 39.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 90.9 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 93.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Relatively High |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
| Coastal Flood | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
3 tsunamis recorded within 500 km. Highest wave on record: 0.3 m (1 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1964 | LONG ISLAND, NY | Meteorological | 0.3 m | — | 125 km |
| 1895 | HIGH BRIDGE, NJ | Earthquake | — | — | 33 km |
| 1840 | PHILADELPHIA, PENNSYLVANIA | Earthquake | — | — | 99 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 29°F (-2°C) | 3.9 in | Coldest |
| February | 31°F (-0°C) | 3.0 in | Driest |
| March | 40°F (4°C) | 4.0 in | |
| April | 50°F (10°C) | 4.1 in | |
| May | 60°F (16°C) | 4.7 in | |
| June | 69°F (21°C) | 4.1 in | |
| July | 74°F (23°C) | 5.0 in | Warmest, Wettest |
| August | 73°F (23°C) | 4.5 in | |
| September | 65°F (19°C) | 4.4 in | |
| October | 54°F (12°C) | 3.7 in | |
| November | 44°F (7°C) | 4.1 in | |
| December | 34°F (1°C) | 3.8 in |
Franklin Center has a seasonal temperature swing of 45°F / from 29°F in January to 74°F in July. Total annual precipitation is 49.3 inches, with July being the wettest month (5.0") and February the driest (3.0").