Chester County's 2026 population is estimated at 559,702, reflecting a 0.46% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Chester County is the 7th largest county in Pennsylvania. The 2010 population was 499,935 and has grown 11.95% since 2010.
Overall: 40.8 years
Female: 41.6 years
Male: 40 years
There are 427,396 adults, (97,116 of whom are seniors) in Chester County.
Female: 276,148 (50.4%)
Male: 271,692 (49.6%)
The racial composition of Chester County includes 77.05% White, 6.8% Asian, 5.21% Black or African American, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 422,108 | 77.05% |
| Two or more races | 43,699 | 7.98% |
| Asian | 37,240 | 6.8% |
| Black or African American | 28,542 | 5.21% |
| Other race | 15,503 | 2.83% |
| Native American | 604 | 0.11% |
| Native Hawaiian or Pacific Islander | 144 | 0.03% |
Chester County 's average per capita income is $76,477. Household income levels show a median of $127,208. The poverty rate stands at 5.98%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $173,343 | $216,276 |
| Families | $155,326 | $197,971 |
| Households | $127,208 | $168,861 |
| Non Families | $68,764 | $94,271 |
Average Income
Median Household Income
Poverty Rate