Chester County Flag

Chester County

State:
Pennsylvania
County Seat:
West Chester

Chester County's estimated 2026 population is 571,615 with a growth rate of 0.96% in the past year according to the most recent United States census data. Chester County is the 6th largest county in Pennsylvania. The 2010 population was 499,935 and has seen a growth of 14.34% since that time.

571,615
Total Population
761
Population Density (mi²)
6
Population Rank (State)
5.4K 0.96%
Annual Population Growth

Chester County Population

Demographics

Economics and Income Statistics