Mount Oliver Flag

Mount Oliver

County Seat:
No
Area (mi²):
0.339
State:
Pennsylvania

Mount Oliver is a borough located in Allegheny County, Pennsylvania. Mount Oliver has a 2026 population of 3,259. Mount Oliver is currently declining at a rate of -0.49% annually and its population has decreased by -3.72% since the most recent census, which recorded a population of 3,385 in 2020.

3.3K
Total Population
9,600
Density (mi²)
-16 -0.49%
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)