Delaware County's estimated 2026 population is 580,458 with a growth rate of -0.08% 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 3.84% since that time.
Data after 2023 is projected based on recent change
Overall: 39.1 years
Female: 40.2 years
Male: 37.9 years
There are 451,639 adults, (100,966 of whom are seniors) in Delaware County.
Female: 298,623 (51.6%)
Male: 280,599 (48.4%)
The racial composition of Delaware County includes 63.23% White, 22.15% Black or African American, 6.33% Asian, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 366,265 | 63.23% |
| Black or African American | 128,315 | 22.15% |
| Asian | 36,677 | 6.33% |
| Two or more races | 33,027 | 5.7% |
| Other race | 14,217 | 2.45% |
| Native American | 417 | 0.07% |
| Native Hawaiian or Pacific Islander | 304 | 0.05% |
Delaware County's average per capita income is $58,678. Household income levels show a median of $89,546. The poverty rate stands at 10.17%.
Name | Median | Mean |
|---|---|---|
| Married Families | $146,168 | $189,461 |
| Families | $116,982 | $157,130 |
| Households | $89,546 | $128,465 |
| Non Families | $49,936 | $71,141 |
Average Income
Median Household Income
Poverty Rate