Delaware County's estimated 2025 population is 578,414 with a growth rate of 0.15% in the past year according to the most recent United States census data. Delaware County is the 5th largest county in Pennsylvania. The 2010 population was 559,009 and has seen a growth of 3.47% since that time.
Data after 2023 is projected based on recent change
The racial composition of Delaware County includes 64.46% White, 22.02% Black or African American, 6.13% Asian, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 371,394 | 64.46% |
| Black or African American | 126,895 | 22.02% |
| Asian | 35,324 | 6.13% |
| Two or more races | 28,381 | 4.93% |
| Other race | 13,224 | 2.3% |
| Native American | 651 | 0.11% |
| Native Hawaiian or Pacific Islander | 326 | 0.06% |
Married
Widowed
Divorced
Separated
Never Married
Delaware County's average per capita income is $57,735. Household income levels show a median of $88,576. The poverty rate stands at 10.17%.
Name | Median | Mean |
|---|---|---|
| Married Families | $142,598 | $184,242 |
| Families | $115,573 | $153,896 |
| Households | $88,576 | $126,081 |
| Non Families | $48,686 | $68,785 |
Average Income
Median Household Income
Poverty Rate