Counties of Delaware
Delaware has 3 counties, home to 1,059,952 people across 5,047 km². Each county below opens its full profile — Census Bureau and American Community Survey figures, and how it ranks against the rest of Delaware and the country.
- Counties
- 3
- Population
- 1,059,952
- 2025 estimate
- #45 of 51 states
- Area
- 5,047 km²
- #49 of 51 states
- Density
- 210
- per km²
- #7 of 51 states
How Delaware's counties spread
Across Delaware's counties: the middle value, where the state ranks among all states (1 = highest median), and which county is highest and lowest. Medians rather than totals, since most of these are rates that cannot be added up.
Amenities & Infrastructure
| Indicator | Median | Rank | Highest | Lowest |
|---|---|---|---|---|
| Households with Broadband2024 | 91.5% | 8 / 50 | New Castle County93.2% | Kent County91.1% |
| Median Gross Rent2024 | $1,354 | 7 / 50 | New Castle County$1,448 | Sussex County$1,238 |
| Median Home Value2024 | $352,200 | 12 / 50 | Sussex County$382,600 | Kent County$316,600 |
| Owner-Occupied Homes2024 | 72.5% | 35 / 50 | Sussex County81.6% | New Castle County69.0% |
| Vacant Homes2024 | 6.4% | 49 / 50 | Sussex County29.9% | New Castle County5.0% |
Demography
| Indicator | Median | Rank | Highest | Lowest |
|---|---|---|---|---|
| Aged 65 and Over2024 | 18.3% | 42 / 50 | Sussex County30.2% | New Castle County17.1% |
| American Indian & Alaska Native2024 | 0.2% | 19 / 50 | Kent County0.3% | New Castle County0.0% |
| Asian, non-Hispanic2024 | 2.5% | 7 / 50 | New Castle County6.2% | Sussex County1.3% |
| Average Household Size2024people | 2.5 | 12 / 50 | Kent County2.6 | Sussex County2.4 |
| Black, non-Hispanic2024 | 24.9% | 5 / 50 | Kent County26.4% | Sussex County9.8% |
| Foreign-Born2024 | 8.4% | 7 / 50 | New Castle County12.8% | Kent County7.4% |
| Hispanic or Latino2024 | 11.5% | 9 / 50 | New Castle County11.8% | Kent County8.1% |
| Median Age2024years | 39.3 | 46 / 50 | Sussex County51.9 | Kent County38.8 |
| Sex Ratio2024per 1,000 males | 1,061 | 1 / 50 | Kent County1,080 | Sussex County1,061 |
| Speak a Language Other Than English2024 | 13.0% | 10 / 50 | New Castle County17.3% | Kent County11.4% |
| Under 182024 | 21.2% | 27 / 50 | Kent County22.8% | Sussex County18.1% |
| Veterans2024 | 8.5% | 9 / 50 | Kent County10.9% | New Castle County5.8% |
| White, non-Hispanic2024 | 56.5% | 42 / 50 | Sussex County72.3% | New Castle County52.3% |
Economy
| Indicator | Median | Rank | Highest | Lowest |
|---|---|---|---|---|
| Below Poverty Line2024 | 10.6% | 35 / 50 | Sussex County10.9% | New Castle County10.1% |
| Households on SNAP2024 | 10.6% | 29 / 50 | Kent County13.7% | New Castle County9.8% |
| Income Inequality2024index | 0.452 | 20 / 50 | Sussex County0.457 | Kent County0.408 |
| Median Household Income2024 | $81,497 | 9 / 50 | New Castle County$91,166 | Kent County$74,477 |
| Per Capita Income2024 | $46,684 | 7 / 50 | New Castle County$47,777 | Kent County$36,191 |
| Unemployment Rate2024 | 5.3% | 12 / 50 | Kent County5.8% | New Castle County4.8% |
Education
| Indicator | Median | Rank | Highest | Lowest |
|---|---|---|---|---|
| Bachelor's Degree or Higher2024 | 33.0% | 8 / 50 | New Castle County39.7% | Kent County27.5% |
| High School or Higher2024 | 91.0% | 28 / 50 | New Castle County92.6% | Sussex County90.2% |
Health Coverage
| Indicator | Median | Rank | Highest | Lowest |
|---|---|---|---|---|
| No Health Insurance2024 | 6.6% | 25 / 50 | Sussex County7.0% | New Castle County5.9% |
| With a Disability2024 | 14.9% | 33 / 50 | Kent County16.6% | New Castle County12.9% |
Population & Density
| Indicator | Median | Rank | Highest | Lowest |
|---|---|---|---|---|
| Population2025 | 277,140 | 4 / 50 | New Castle County588,026 | Kent County194,786 |
| Population Density2025/km² | 128 | 6 / 50 | New Castle County533 | Sussex County114 |
Work & Commute
| Indicator | Median | Rank | Highest | Lowest |
|---|---|---|---|---|
| Commute by Public Transit2024 | 1.0% | 6 / 50 | New Castle County2.6% | Sussex County0.5% |
| Households with No Vehicle2024 | 6.6% | 9 / 50 | New Castle County7.5% | Sussex County3.3% |
| Mean Commute Time2024minutes | 26.5 | 15 / 50 | Sussex County27.3 | New Castle County25.3 |
| Work from Home2024 | 13.4% | 12 / 50 | New Castle County17.6% | Kent County8.7% |
All counties
| County | Population 2025 | Area | Median income |
|---|---|---|---|
| Kent County | 194,786 | 1,518 km² | $74,477 |
| New Castle County | 588,026 | 1,104 km² | $91,166 |
| Sussex County | 277,140 | 2,425 km² | $81,497 |
Compare Delaware's counties on a map, add layers and run a scatter — open the atlas, or browse all 3,144 US counties or all states.