South Londonderry Flag

South Londonderry

County:
Lebanon County
County Seat:
No
Area (mi²):
24.351
State:
Pennsylvania

South Londonderry is located in Lebanon County, Pennsylvania. South Londonderry has a 2025 population of 9,031 . South Londonderry is currently growing at a rate of 1.23% annually and its population has increased by 2.79% since the most recent census, which recorded a population of 8,786 in 2020.

The average household income in South Londonderry is $120,679 with a poverty rate of 5.03%. The median age in South Londonderry is 37.9 years: 35 years for males, and 38.8 years for females. For every 100 females there are 99.7 males.

9K
Total Population
371
Density (mi²)
110 1.23%
Growth

South Londonderry Population

South Londonderry Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of South Londonderry includes 87.03% White, 4.79% Asian, 3.67% other race, and smaller percentages for Two or more races, Black or African American and multiracial populations.

Population by Race

White (87.03%)

Asian (4.79%)

Other race (3.67%)

Two or more races (2.44%)

Black or African American (2.08%)

Race
Population
Percentage (of total)
White7,63387.03%
Asian4204.79%
Other race3223.67%
Two or more races2142.44%
Black or African American1822.08%

South Londonderry Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

South Londonderry's average per capita income is $63,030. Household income levels show a median of $100,208. The poverty rate stands at 5.03%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$132,975-
Families$109,691$135,629
Households$100,208$120,679
Non Families$72,528$74,378

$63,030

Average Income

$100,208

Median Household Income

5.03%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)