Brentwood Flag

Brentwood

County Seat:
No
Area (mi²):
1.449
State:
Pennsylvania

Brentwood is a borough located in Allegheny County, Pennsylvania. Brentwood has a 2026 population of 9,704. Brentwood is currently declining at a rate of -0.5% annually and its population has decreased by -3.68% since the most recent census, which recorded a population of 10,075 in 2020.

9.7K
Total Population
6,699
Density (mi²)
-49 -0.5%
Growth

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)