New Castle County, Delaware
New Castle County, Delaware, had an estimated population of 588,026 in 2025 across 1,104 km². The figures below come from the US Census Bureau's population estimates and the American Community Survey, each shown with its own vintage and its rank among Delaware's counties and nationally.
- Population
- 588,026
- 2025 estimate
- Area
- 1,104 km²
- Density
- 533
- per km²
- Median income
- $91,166
- household, ACS 2024
- Median age
- 39.3
- years, ACS 2024
How Delaware's counties spread
Amenities & Infrastructure
| Indicator | Value | In Delaware | In the US |
|---|---|---|---|
| Households with Broadband2024 | 93.2% | 1 / 3 | 238 / 3,144 |
| Median Gross Rent2024 | $1,448 | 1 / 3 | 279 / 3,137 |
| Median Home Value2024 | $352,200 | 2 / 3 | 407 / 3,139 |
| Owner-Occupied Homes2024 | 69.0% | 3 / 3 | 2,344 / 3,144 |
| Vacant Homes2024 | 5.0% | 3 / 3 | 2,971 / 3,144 |
Demography
| Indicator | Value | In Delaware | In the US |
|---|---|---|---|
| Aged 65 and Over2024 | 17.1% | 3 / 3 | 2,381 / 3,144 |
| American Indian & Alaska Native2024 | 0.0% | 3 / 3 | 2,461 / 3,144 |
| Asian, non-Hispanic2024 | 6.2% | 1 / 3 | 120 / 3,144 |
| Average Household Size2024people | 2.5 | 2 / 3 | 1,030 / 3,144 |
| Black, non-Hispanic2024 | 24.9% | 2 / 3 | 369 / 3,144 |
| Foreign-Born2024 | 12.8% | 1 / 3 | 258 / 3,144 |
| Hispanic or Latino2024 | 11.8% | 1 / 3 | 746 / 3,144 |
| Median Age2024years | 39.3 | 2 / 3 | 2,226 / 3,144 |
| Sex Ratio2024per 1,000 males | 1,061 | 2 / 3 | 369 / 3,144 |
| Speak a Language Other Than English2024 | 17.3% | 1 / 3 | 470 / 3,144 |
| Under 182024 | 21.2% | 2 / 3 | 1,817 / 3,144 |
| Veterans2024 | 5.8% | 3 / 3 | 2,432 / 3,144 |
| White, non-Hispanic2024 | 52.3% | 3 / 3 | 2,675 / 3,144 |
Economy
| Indicator | Value | In Delaware | In the US |
|---|---|---|---|
| Below Poverty Line2024 | 10.1% | 3 / 3 | 2,322 / 3,144 |
| Households on SNAP2024 | 9.8% | 3 / 3 | 1,963 / 3,144 |
| Income Inequality2024index | 0.452 | 2 / 3 | 1,316 / 3,144 |
| Median Household Income2024 | $91,166 | 1 / 3 | 278 / 3,143 |
| Per Capita Income2024 | $47,777 | 1 / 3 | 283 / 3,144 |
| Unemployment Rate2024 | 4.8% | 3 / 3 | 1,259 / 3,144 |
Education
| Indicator | Value | In Delaware | In the US |
|---|---|---|---|
| Bachelor's Degree or Higher2024 | 39.7% | 1 / 3 | 283 / 3,144 |
| High School or Higher2024 | 92.6% | 1 / 3 | 876 / 3,144 |
Health Coverage
| Indicator | Value | In Delaware | In the US |
|---|---|---|---|
| No Health Insurance2024 | 5.9% | 3 / 3 | 2,174 / 3,144 |
| With a Disability2024 | 12.9% | 3 / 3 | 2,451 / 3,144 |
Population & Density
| Indicator | Value | In Delaware | In the US |
|---|---|---|---|
| Population2025 | 588,026 | 1 / 3 | 121 / 3,144 |
| Population Density2025/km² | 533 | 1 / 3 | 119 / 3,144 |
Work & Commute
| Indicator | Value | In Delaware | In the US |
|---|---|---|---|
| Commute by Public Transit2024 | 2.6% | 1 / 3 | 128 / 3,144 |
| Households with No Vehicle2024 | 7.5% | 1 / 3 | 652 / 3,144 |
| Mean Commute Time2024minutes | 25.3 | 3 / 3 | 1,282 / 3,143 |
| Work from Home2024 | 17.6% | 1 / 3 | 229 / 3,144 |
Other counties of Delaware
Compare New Castle County against every other county on a map, add layers and run a scatter — open the atlas. Sources and vintages for every figure on this page are listed under datasets, or browse all 3,144 counties.