All Countries
Croydon, PA
Full City Profile · Pennsylvania · Mercer County County
2.7
/5.0
C+
Fair
9,704
Population
3,913/sq mi density
$59,883
Median Income
$31,244 per capita
$265,000
Home Value
$341,997 Zillow
$1,308
Median Rent
47.1% income on rent
53°F
Avg Temperature
271 sunny days/yr
208
Violent Crime/100K
2,903 property/100K
C+
Overall
2.7 / 5.0
Fair overall score based on economy, affordability, safety and education
B+
Economy
3.5 / 5.0
$59,883 median income, 4.2% unemployment
A
Affordability
4.2 / 5.0
$265,000 home value, $1,308/mo rent
F
Safety
1.0 / 5.0
208 violent crimes/100K
C
Education
2.2 / 5.0
15.4% bachelor's degree or higher
Croydon experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 30°F in January while summers reach 76°F in July. The area gets 271 sunny days per year. Annual precipitation totals 50.7 inches. The area receives 19.9 inches of snow annually. Air quality is rated Good with a median AQI of 40.
Temperature
30°F Jan (-1°C)
76°F Jul (24°C)
| Annual Average | 52.9°F |
| 2% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 76°F (24°C) |
| Sunny Days | 271 days/yr |
Geography
| Elevation | 29 ft (9 m) |
| Area | 2.5 sq mi (6.3 km²) |
| Population Density | 3,913/sq mi |
| Coordinates | 40.0903°N, 74.8967°W |
| Timezone | America/New_York |
| County | Mercer County County |
| Nearest Airport | South Jersey Regional (LLY) 11 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 40.0 |
| 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 | — | — | 64 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 | 30°F (-1°C) | 3.6 in | Coldest |
| February | 34°F (1°C) | 2.8 in | Driest |
| March | 42°F (6°C) | 4.0 in | |
| April | 52°F (11°C) | 3.9 in | |
| May | 62°F (17°C) | 4.3 in | |
| June | 71°F (22°C) | 3.8 in | |
| July | 76°F (24°C) | 4.7 in | Warmest, Wettest |
| August | 75°F (24°C) | 4.6 in | |
| September | 67°F (20°C) | 4.0 in | |
| October | 56°F (13°C) | 3.4 in | |
| November | 46°F (8°C) | 3.7 in | |
| December | 37°F (3°C) | 3.6 in |
Croydon has a seasonal temperature swing of 45°F / from 30°F in January to 76°F in July. Total annual precipitation is 46.3 inches, with July being the wettest month (4.7") and February the driest (2.8").