South Londonderry is a township in Lebanon County, Pennsylvania, home to about 8,823 people across 24 square miles. Its ZIP codes are 17010, 17041 and 17064, and parts of 17033 and 17078 are in South Londonderry too.
Homes sold for a median of $370 per square foot in the three months ending August 2026, a seller’s market.
All in South Londonderry
All in South Londonderry
Mostly South Londonderry; also Mount Gretna and West Cornwall
Mostly Derry Township (Dauphin County); part is in South Londonderry
Mostly Palmyra Borough; part is in South Londonderry
Each card is that ZIP code’s whole market, including any part outside South Londonderry. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up South Londonderry’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Philadelphia International Airport (PHL)77 miles away |
|---|---|
| Closer regional airport | Harrisburg International Airport (MDT)11 miles away |
| Nearest city of 250,000+ | Baltimore, MD68 miles away |
| Nearest city of 1 million+ | Philadelphia, PA79 miles away |
Straight-line distances from the center of South Londonderry; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
South Londonderry had 8,776 residents in the 2020 census, up 61% since 2000.
It’s the 316th largest of 2,568 towns in Pennsylvania by population.
Lebanon County grew from 53,827 residents in 1900 to 143,257 in 2020.
Lebanon County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 84°F in summer, and winter lows average 22°F. About 46.5 inches of rain and melted snow fall in a typical year, with about 24 inches of snow.
Source: NOAA 1991–2020 climate normals, Lebanon 2 W, PA weather station (7 miles away).
50,901 jobs at 2,811 businesses in Lebanon County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
82 doctors and other health care providers list an office in South Londonderry’s ZIP codes.
Nearest hospitals
Providers with an office here
| Specialist doctors | 2 |
|---|---|
| Dentists | 1 |
| Nurse practitioners and physician assistants | 2 |
| Mental health providers | 76 |
| Chiropractors | 1 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (17 nearby)
Grocery stores (5 nearby)
Pharmacies (4 nearby)
Libraries (1 nearby)
Museums (3 nearby)
Theaters and performance venues (3 nearby)
Counts are within about 3.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
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Shares ZIP codes with Derry Township (Dauphin County), Palmyra Borough, North Londonderry, Conewago Township (Dauphin County), South Hanover, East Hanover Township (Dauphin County), East Hanover Township (Lebanon County), Mount Gretna and West Cornwall.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.