Philadelphia County Flag

Philadelphia County

State:
Pennsylvania
County Seat:
Philadelphia

Philadelphia County's estimated 2025 population is 1,517,954 with a growth rate of -1.06% in the past year according to the most recent United States census data. Philadelphia County is the 1st largest county in Pennsylvania. The 2010 population was 1,528,303 and has seen a growth of -0.68% since that time.

1,517,954
Total Population
11,328
Population Density (mi²)
1
Population Rank (State)
-16.3K -1.06%
Annual Population Growth

Philadelphia County Population

Demographics

Economics and Income Statistics