Arnold Flag

Arnold

County Seat:
No
Area (mi²):
0.732
State:
Pennsylvania

Arnold is a city located in Allegheny County, Pennsylvania. Arnold has a 2026 population of 4,657. Arnold is currently declining at a rate of -0.32% annually and its population has decreased by -2.25% since the most recent census, which recorded a population of 4,764 in 2020.

4.7K
Total Population
6,362
Density (mi²)
-15 -0.32%
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)