How many people live in Chester County, PA?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 560,700 people living in Chester County, PA. That makes Chester County the seventh-most populous county in Pennsylvania. It is home to 4.3% of people living in the state.
561K
population of Chester County, PA (2024)
4.3%
County share of the Pennsylvania population (2024)
About 560,700 people lived in Chester County, PA in 2024.
Population estimates, 2000–2024
What are Chester County, PA’s age demographics?
About 104,900 Chester County residents are aged 65 and older in 2024. That represents 18.7% of its population. For comparison, the age group represents 20.4% of Pennsylvania’s population and 18% in the US overall.
Another 119,600 Chester County, PA residents, or 21.3% of the population, were children under 18. For comparison, the age group represents 20.1% of Pennsylvania’s population and 21.6% in the US overall.
A lower share of Chester County, PA's population is aged 25–44 than the US as a whole.
Population estimates by age group, (2024)
What are Chester County, PA’s racial and ethnic demographics?
Non-Hispanic white residents make up 75.5% of the Chester County, PA population, higher than the national share of 57.5%. Chester County, PA also has a larger share of people identifying as non-Hispanic Asian (7.8%) than the US overall (6.5%).
In contrast, Chester County’s Hispanic population accounts for 8.8%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 5.8% of the county, compared with 12.6% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Chester County, PA has a higher share of a non-Hispanic Asian population than Pennsylvania as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Chester County, PA is Tredyffrin with about 32,100 residents in 2024.
Cities and towns in Chester County, PA ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Tredyffrin | 32,067 |
| 2. | West Goshen | 24,139 |
| 3. | West Chester borough | 22,758 |
| 4. | West Whiteland | 20,885 |
| 5. | Phoenixville borough | 20,286 |
| 6. | Uwchlan | 19,772 |
| 7. | East Goshen | 18,509 |
| 8. | Caln | 15,203 |
| 9. | East Whiteland | 15,069 |
| 10. | West Bradford | 14,857 |
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
