New Castle County, Delaware
New Castle County, Delaware · ZIP 19701, 19702, 19703
- Census data · ACS 2019-2023
- 588,093 (2024 estimate)Population
- 222,943Households
- $89,901Median household income
- $329,800Median home value
- 26Towns with a page
- 31ZIP codes
New Castle County in numbersOfficial sources, refreshed yearly
| Census | Population |
|---|---|
| 2000 | 500,265 |
| 2010 | 538,479 |
| 2020 | 570,719 |
As counted at each census, within the boundaries the area had then; the current estimate is in the glance card.
Sources: Census 2000 Summary File 1: total population, county level, state 10, retrieved November 14, 2026; Census 2010 Summary File 1: total population, county level, state 10, retrieved November 14, 2026; Census 2020 Redistricting Data (P.L. 94-171): total population, county level, state 10, retrieved November 14, 2026.
Median household income $89,901 · Share of households by income, American Community Survey 5-year 2019-2023, table S1901.
Source: American Community Survey 5-year subject table S1901 (household income) 2019–2023, county level, state 10, retrieved November 14, 2026.
- Owner occupied
- 152,742 units
- Renter occupied
- 70,201 units
- Vacancy rate
- 5.2%
Occupied housing units by tenure and the share of all units vacant, American Community Survey 5-year 2019-2023, table DP04.
Source: American Community Survey 5-year data profile 2019–2023, county level, state 10, retrieved November 14, 2026.
306,745 employees in 17,855 establishments with payroll in 2023, all sectors; employers themselves are not named in the source. County Business Patterns counts are published with noise.
Source: County Business Patterns 2023: employment by sector, county level, state 10, retrieved November 14, 2026.
| Measure | New Castle County | Delaware |
|---|---|---|
| Population | 573,030 | 1,005,872 |
| Median household income | $89,901 | $82,855 |
| Median age | 39.2 | 41.5 |
| Median home value | $329,800 | $326,800 |
| Bachelor’s degree or higher | 39.2% | 35.3% |
| Foreign-born residents | 12.3% | 10.4% |
| Owner-occupied homes | 68.5% | 72.3% |
| Mean commute to work | 25.4 minutes | 26.1 minutes |
Source: American Community Survey 5-year data profile 2019–2023, county level, state 10, retrieved November 14, 2026.
Townships, towns and villages in New Castle County26 with a page · sort by any column
| Type | |||
|---|---|---|---|
| Wilmington | City | 73,176 | 10.9 sq mi |
| Newark | City | 30,506 | 9.47 sq mi |
| Middletown | Town | 25,686 | 13.5 sq mi |
| Bear | Census designated place | 22,604 | 5.78 sq mi |
| Glasgow | Census designated place | 16,095 | 9.93 sq mi |
| Brookside | Census designated place | 15,262 | 3.88 sq mi |
| Hockessin | Census designated place | 13,608 | 10.0 sq mi |
| Pike Creek Valley | Census designated place | 11,992 | 2.87 sq mi |
| Claymont | Census designated place | 9,543 | 2.15 sq mi |
| North Star | Census designated place | 8,178 | 6.80 sq mi |
| Wilmington Manor | Census designated place | 8,030 | 1.62 sq mi |
| Pike Creek | Census designated place | 7,185 | 2.69 sq mi |
| Edgemoor | Census designated place | 6,671 | 1.91 sq mi |
| Elsmere | Town | 6,234 | 0.99 sq mi |
| New Castle | City | 5,715 | 3.48 sq mi |
| Greenville | Census designated place | 3,100 | 2.80 sq mi |
| Townsend | Town | 2,941 | 1.12 sq mi |
| Delaware City | City | 1,933 | 1.86 sq mi |
| St. Georges | Census designated place | 1,564 | 1.38 sq mi |
| Bellefonte | Town | 1,249 | 0.20 sq mi |
| Newport | Town | 909 | 0.47 sq mi |
| Port Penn | Census designated place | 477 | 0.40 sq mi |
| Arden | Village | 437 | 0.25 sq mi |
| Odessa | Town | 366 | 0.51 sq mi |
| Ardentown | Village | 258 | 0.23 sq mi |
| Ardencroft | Village | 234 | 0.09 sq mi |
Populations: Census Population Estimates, Vintage 2024: subcounty totals, state 10 (2024). Land areas: Census Gazetteer 2025: counties. A dash means the figure is not in the cited file.
County officialsFrom public records
No county official is published yet. Names appear once a researcher drafts them from the county’s own site and a second person approves; office contacts only, never personal details.
Across New Castle County
No job is posted in New Castle County’s towns yet. Employers post from their business dashboard; public job banks are added once their terms are recorded.
No upcoming event is listed in New Castle County's towns yet. Members and businesses add events from any town page.
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Neighboring counties
Neighboring counties
- Cecil CountyPopulation 106,305 (2024 estimate)
- Chester CountyPopulation 560,745 (2024 estimate)
- Delaware CountyPopulation 584,882 (2024 estimate)
- Gloucester CountyPopulation 311,783 (2024 estimate)
- Kent CountyPopulation 192,690 (2024 estimate)
- Kent CountyPopulation 19,557 (2024 estimate)
- Salem CountyPopulation 65,874 (2024 estimate)
Sources: Census county adjacency file 2024, retrieved November 14, 2026; Census Population Estimates, Vintage 2024: subcounty totals, state 24, retrieved November 14, 2026; Census Population Estimates, Vintage 2024: subcounty totals, state 42, retrieved November 14, 2026; Census Population Estimates, Vintage 2024: subcounty totals, state 34, retrieved November 14, 2026; Census Population Estimates, Vintage 2024: subcounty totals, state 10, retrieved November 14, 2026.