Londonderry township Flag

Londonderry township

County:
Dauphin County
County Seat:
No
Area (mi²):
22.76
State:
Pennsylvania

Londonderry township is located in Dauphin County, Pennsylvania. Londonderry township has a 2026 population of 4,948. Londonderry township is currently growing at a rate of 0.24% annually and its population has increased by 1.02% since the most recent census, which recorded a population of 4,898 in 2020.

The median household income in Londonderry township is $91,905 with a poverty rate of 8.87%. The median age in Londonderry township is 40.5 years: 40.8 years for males, and 40.5 years for females. For every 100 females there are 103.7 males.

4.9K
Total Population
217
Density (mi²)
12 0.24%
Growth

Londonderry township Population

Londonderry township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20264,948120.24%
20254,936120.24%
20244,924120.24%
20234,912190.39%
20224,893-9-0.18%
20214,90240.08%
20204,89800%
20195,24950.1%
20185,24430.06%
20175,241160.31%
20165,22510.02%
20155,224-4-0.08%
20145,22840.08%
20135,22440.08%
20125,22050.1%
20115,215-20-0.38%
20105,216-2-0.04%

Median Age

Overall: 40.5 years
Female: 40.5 years
Male: 40.8 years

Londonderry township Adults

There are 3,485 adults, (841 of whom are seniors) in Londonderry township.

Sex Ratio

Female: 2,408 (49.1%)
Male: 2,498 (50.9%)

Demographics

The racial composition of Londonderry township includes 83.22% White, 4.32% Black or African American, and smaller percentages for other race, Asian and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White4,08383.22%
Two or more races55211.25%
Black or African American2124.32%
Other race410.84%
Asian180.37%
Race
Population ↓
Percentage (of total)
Two or more races4629.42%
Other race410.84%
Black or African American200.41%
White120.24%
Race
Population ↓
Percentage (of total)
White4,07182.98%
Black or African American1923.91%
Two or more races901.83%
Asian180.37%

Londonderry township Marital Status

Economics and Income Statistics

Londonderry township 's average per capita income is $51,205. Household income levels show a median of $91,905. The poverty rate stands at 8.87%.

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$117,940-
Families$110,446$108,588
Households$91,905$96,450
Non Families$55,031$69,667

$51,205

Average Income

$91,905

Median Household Income

8.87%

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)