Glen Rock, PA
Full City Profile · Pennsylvania · York County County
3.9
/5.0
B+
Good
2,313
Population
2,891/sq mi density
$71,500
Median Income
$37,097 per capita
$248,300
Home Value
$374,140 Zillow
$1,103
Median Rent
32.4% income on rent
54°F
Avg Temperature
B+
Overall
3.9 / 5.0
Good overall score based on economy, affordability, safety and education
C+
Economy
2.9 / 5.0
$71,500 median income, 9.1% unemployment
A+
Affordability
4.7 / 5.0
$248,300 home value, $1,103/mo rent
A
Education
4.0 / 5.0
37.5% bachelor's degree or higher
Glen Rock experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 32°F in January while summers reach 75°F in July. Annual precipitation totals 47.9 inches. The area receives 34.1 inches of snow annually. Air quality is rated Good with a median AQI of 44.
Temperature
32°F Jan (-0°C)
75°F Jul (24°C)
| Annual Average | 53.6°F |
| 1% below US avg | |
| January Average | 32°F (-0°C) |
| July Average | 75°F (24°C) |
Geography
| Elevation | 553 ft (169 m) |
| Area | 0.8 sq mi (2.1 km²) |
| Population Density | 2,891/sq mi |
| Coordinates | 39.7935°N, 76.7307°W |
| Timezone | America/New_York |
| County | York County County |
| Nearest Airport | Harrisburg International (MDT) 28 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 44.0 |
| Rating | Good |
| Good Days % | 65.6% |
| Unhealthy Days | 1 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0476 ppm |
| NO₂ (Nitrogen Dioxide) | 14.2 ppb |
| SO₂ (Sulfur Dioxide) | 0.63 ppb |
| PM2.5 (Fine Particles) | 10.5 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 90.4 / 100 |
| Social Vulnerability | 17.1 / 100 |
| Community Resilience | 83.5 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| 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 | Very High |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
| Avalanche | Very Low |
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 | - | - | 131 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (-0°C) | 3.6 in | Coldest |
| February | 34°F (1°C) | 2.9 in | Driest |
| March | 42°F (5°C) | 4.1 in | |
| April | 53°F (12°C) | 3.8 in | |
| May | 62°F (17°C) | 4.0 in | |
| June | 70°F (21°C) | 3.8 in | |
| July | 75°F (24°C) | 4.7 in | Warmest |
| August | 73°F (23°C) | 4.2 in | |
| September | 67°F (19°C) | 5.1 in | Wettest |
| October | 55°F (13°C) | 4.2 in | |
| November | 45°F (7°C) | 3.4 in | |
| December | 36°F (2°C) | 4.0 in |
Glen Rock has a seasonal temperature swing of 43°F / from 32°F in January to 75°F in July. Total annual precipitation is 47.9 inches, with September being the wettest month (5.1") and February the driest (2.9").