Thornburg Flag

Thornburg

County Seat:
No
Area (mi²):
0.438
State:
Pennsylvania

Thornburg is a borough located in Allegheny County, Pennsylvania. Thornburg has a 2026 population of 441. Thornburg is currently declining at a rate of -0.9% annually and its population has decreased by -5.16% since the most recent census, which recorded a population of 465 in 2020.

The median household income in Thornburg is $231,250 with a poverty rate of 0.22%. The median age in Thornburg is 43 years: 43.6 years for males, and 42.6 years for females. For every 100 females there are 92.5 males.

441
Total Population
1,008
Density (mi²)
-4 -0.9%
Growth

Thornburg Population

Thornburg Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026441-4-0.9%
2025445-4-0.89%
2024449-2-0.44%
2023451-4-0.88%
2022455-6-1.3%
2021461-4-0.86%
2020465-1-0.21%
2019413-2-0.48%
2018415-2-0.48%
2017417-4-0.95%
2016421-5-1.17%
2015426-3-0.7%
2014429-1-0.23%
2013430-1-0.23%
201243100%
2011431-24-5.27%
201043000%

Median Age

Overall: 43 years
Female: 42.6 years
Male: 43.6 years

Thornburg Adults

There are 334 adults, (101 of whom are seniors) in Thornburg.

Sex Ratio

Female: 241 (51.9%)
Male: 223 (48.1%)

Demographics

The racial composition of Thornburg includes 91.38% White, and smaller percentages for Black or African American, Asian and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White42491.38%
Two or more races337.11%
Black or African American40.86%
Asian30.65%
Race
Population ↓
Percentage (of total)
White204.31%
Two or more races20.43%
Race
Population ↓
Percentage (of total)
White40487.07%
Two or more races316.68%
Black or African American40.86%
Asian30.65%

Thornburg Marital Status

Economics and Income Statistics

Thornburg 's average per capita income is $117,500. Household income levels show a median of $231,250. The poverty rate stands at 0.22%.

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$245,000-
Families$241,250$285,196
Households$231,250$279,659
Non Families$141,250$240,905

$117,500

Average Income

$231,250

Median Household Income

0.22%

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)