The Town FilesSouth Londonderry, Pennsylvania
Township in Lebanon County · population 8,776 (2020 Census)
- Median home
- $342,600
- Household income
- $112,374
- Jan low / Jul high
- 22° / 84°
- Snow a year
- 24 in
- Tornadoes ≤10 mi since 1950
- 11
- Median age
- 38.6
South Londonderry is a township of 8,776 people in Lebanon County, Pennsylvania. The median home is worth $342,600, above the typical Pennsylvania town ($214,250). It ranks better for young professionals than 87% of Pennsylvania towns, more upscale than 86% of Pennsylvania towns, more of a college town than 82% of Pennsylvania towns.
How South Londonderry ranks
Percentile among Pennsylvania towns with at least 500 people on The Town Files lifestyle rankings. 50 is typical for the state; 90 means better than 90% of Pennsylvania towns.
Homes and cost of living
The median home in South Londonderry is worth $342,600, above the typical Pennsylvania town ($214,250). Homes cost about 3.0 times the median household income of $112,374, which is more affordable than 43% of Pennsylvania towns. Median rent is $1,441 a month. 75.5% of households own their home.
| Housing | South Londonderry | Typical Pennsylvania town |
|---|---|---|
| Median home value | $342,600 | $214,250 |
| Median rent | $1,441 | $996 |
| Median household income | $112,374 | $75,278 |
| Home value ÷ income | 3.0× | 2.8× |
| Homeownership | 75.5% | 81.5% |
| Median year built | 2000 | 1971 |
| Seasonal / vacation homes | 1.7% | — |
Who lives in South Londonderry
| People | South Londonderry | Typical Pennsylvania town |
|---|---|---|
| Median age | 38.6 | 44.2 |
| Age 65 and over | 16.5% | 21.1% |
| Under 18 | 26.5% | — |
| Bachelor's degree or higher | 47.1% | 23.8% |
| Below the poverty line | 6.3% | 8.5% |
| Veterans | 6.1% | — |
| Born outside the U.S. | 5.6% | — |
| Work from home | 22.1% | 10.6% |
| Average commute | 21.6 min | 25.9 min |
| Homes with broadband | 90.6% | 89.0% |
Weather in South Londonderry
July highs average 84.4°F and January lows 22.0°F. About 46.4 inches of rain and melted snow fall a year, with 24.0 inches of snow (typical Pennsylvania town: 31.8 in). Expect about 13 days a year at 90°F or hotter and 120 nights at or below freezing.
Tornadoes, storms and disasters
11 tornadoes have passed within 10 miles of South Londonderry since 1950, compared with 10 for the typical Pennsylvania town. 5 rated (E)F2 or stronger. The strongest, an F3, struck on July 14, 2004 about 3.7 miles from the town center. The most recent was on April 28, 2011.
Hail of 1 inch or larger has been reported within 10 miles 40 times; the largest was 2.75 inches on April 9, 1980.
Severe weather in Lebanon County since 1996
Lebanon County has been included in 19 federal disaster or emergency declarations since 1953, most often for flood, hurricane, snowstorm.
| Declared | Incident | Declaration |
|---|---|---|
| March 30, 2020 | Biological | DR-4506: Covid-19 Pandemic |
| March 13, 2020 | Biological | EM-3441: Covid-19 |
| March 23, 2016 | Snowstorm | DR-4267: Severe Winter Storm And Snowstorm |
| October 29, 2012 | Hurricane | EM-3356: Hurricane Sandy |
| September 12, 2011 | Flood | DR-4030: Tropical Storm Lee |
Jobs and pay in Lebanon County
Lebanon County had 53,500 jobs in 2024, paying an average of $55,454 a year. Unemployment was 2.8% in 2023; in South Londonderry itself the ACS puts it at 1.3%.
Towns near South Londonderry
- Campbelltown, PA3.3 mi · 5,922 people · home $349,500
- South Annville, PA3.8 mi · 3,438 people · home $323,000
- Conewago, PA4.2 mi · 2,952 people · home $382,500
- Mount Joy, PA5.1 mi · 10,721 people · home $311,800
- Palmyra, PA5.6 mi · 7,830 people · home $227,500
- North Londonderry, PA6.0 mi · 8,911 people · home $309,100
- Hershey, PA6.1 mi · 13,858 people · home $379,200
- Derry, PA6.2 mi · 24,715 people · home $390,000
South Londonderry questions
Is South Londonderry, Pennsylvania a good place to retire?
On The Town Files lifestyle rankings, South Londonderry scores better for retirees than 69% of Pennsylvania towns and quieter than 20%. 16.5% of residents are 65 or older (median age 38.6).
How much does a house cost in South Londonderry?
The median owner-occupied home in South Londonderry is valued at $342,600 (Census ACS 2020–2024), against a median household income of $112,374, so homes cost about 3.0 times income. Median rent is $1,441 a month.
What is the weather like in South Londonderry?
July highs average 84.4°F and January lows 22.0°F (NOAA 1991–2020 normals). It gets about 46.4 inches of precipitation a year and 24.0 inches of snow.
Does South Londonderry get tornadoes?
11 tornadoes have passed within 10 miles of South Londonderry since 1950 (NOAA Storm Events); the strongest was a F3 on July 14, 2004. The typical Pennsylvania town has had 10.
- U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024)
- U.S. Census Bureau, 2020 Census and 2025 Gazetteer (2020 / 2025)
- NOAA NCEI U.S. Climate Normals (1991–2020)
- NOAA NCEI Storm Events Database (1950–2026)
- FEMA OpenFEMA Disaster Declarations (this product uses the FEMA OpenFEMA API but is not endorsed by FEMA) (1953–2026)
- NCES Common Core of Data (2023–24)
- BLS Quarterly Census of Employment and Wages; USDA ERS county unemployment (BLS LAUS) (2000–2024)
- The Town Files lifestyle rankings, built from federal demographic, school, crime and housing data (2025)