Thornburg Flag

Thornburg

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

Thornburg is a borough located in Allegheny County, Pennsylvania. Thornburg has a 2025 population of 445 . Thornburg is currently declining at a rate of -0.89% annually and its population has decreased by -4.3% since the most recent census, which recorded a population of 465 in 2020.

The average household income in Thornburg is $275,528 with a poverty rate of 0.68%. The median age in Thornburg is 42.9 years: 42.6 years for males, and 43.8 years for females. For every 100 females there are 100.0 males.

445
Total Population
1,017
Density (mi²)
-4 -0.89%
Growth

Thornburg Population

Thornburg Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Thornburg includes 89.64% White, and smaller percentages for other race, Black or African American, Asian and multiracial populations.

Population by Race

White (89.64%)

Two or more races (8.11%)

Other race (0.9%)

Black or African American (0.68%)

Asian (0.68%)

Race
Population
Percentage (of total)
White39889.64%
Two or more races368.11%
Other race40.9%
Black or African American30.68%
Asian30.68%

Thornburg Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Thornburg's average per capita income is $113,750. Household income levels show a median of $220,625. The poverty rate stands at 0.68%.

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
Families$229,375$285,029
Married Families$228,125-
Households$220,625$275,528
Non Families$137,500$205,328

$113,750

Average Income

$220,625

Median Household Income

0.68%

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)