Chester
- County:
- Delaware County
- County Seat:
- No
- Area (mi²):
- 4.833
- State:
- Pennsylvania
Chester is a city located in Delaware County, Pennsylvania. Chester has a 2026 population of 34,052. Chester is currently growing at a rate of 0.43% annually and its population has increased by 4.15% since the most recent census, which recorded a population of 32,695 in 2020.