New Castle
City in New Castle County, Delaware

New Castle is a city in New Castle County, Delaware, with 5,551 residents (2020 Census). It sits at 10 ft (3 m) above sea level. The nearest town is Wilmington Manor, 1.5 miles NW.
- 5,551residents (2020 Census)
- 10 ftelevation · 3 m
- 3.5 sq miland area · 9.0 km²
- 1,596 / sq mipopulation density
- 19720ZIP code
About New Castle
New Castle is a city in New Castle County, Delaware, United States. The city is located six miles (10 km) south of Wilmington and is situated on the Delaware River. As of 2020, the city's population was 5,551. New Castle constitutes part of the Philadelphia metropolitan area.
Text: Wikipedia · CC BY-SA 4.0
New Castle weather: 7-day forecast
Loading the National Weather Service forecast…
Source: National Weather Service (NOAA).
Live webcams in New Castle
Webcams: Windy.com
Living in New Castle
- Median household income
- $89,205
- Median home value
- $285,100
- Median rent
- $1,739/mo
- Median age
- 48.5
Do you know New Castle? Tell us about it
Help other travelers: share what makes New Castle special. We review every message before publishing it.
Map of New Castle
Tap any street on the map to see it in Street View below. Map: © OpenStreetMap contributors.
New Castle Street View
Drag the image to look around and tap the arrows on the ground to move. If it says there is no imagery, tap a nearby street on the map above.
Open in Google Maps ›New Castle, DE population
New Castle had 5,551 residents in the 2020 Census.
| 2020 Census | 5,551 |
|---|---|
| Density | 1,596 per sq mi (616 per km²) |
Source: U.S. Census Bureau, Decennial Census.
New Castle at a glance
| State | Delaware (DE) |
|---|---|
| County | New Castle County |
| Type | City |
| Population | 5,551 (2020) |
| Land area | 3.48 sq mi (9.0 km²) |
| Water area | 0.04 sq mi (0.11 km²) |
| Elevation | 10 ft (3 m) |
| Coordinates | 39.6700° N, 75.5665° W |
| ZIP code | 19720 |
| Official website | newcastlecity.delaware.gov |
| Census code (GEOID) | 1050800 |
Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.
Towns near New Castle
- Wilmington Manor1.5 mi NW
- Newport3.7 mi NW
- Pennsville, NJ4.5 mi SE
- Wilmington4.9 mi N
- Elsmere5.0 mi N
- Penns Grove, NJ6.5 mi NE
- Edgemoor6.6 mi NE
- Carneys Point, NJ6.7 mi E
- Delaware City6.8 mi S
- Bear7.0 mi SW
- Brookside7.5 mi W
- Bellefonte7.6 mi NE
Straight-line distance between town centers.
Frequently asked questions about New Castle
What county is New Castle in?
New Castle is in New Castle County, Delaware.
What is the population of New Castle, DE?
5,551 people lived in New Castle at the 2020 Census.
What is the ZIP code of New Castle, DE?
The ZIP code of New Castle is 19720.
What is the elevation of New Castle?
10 feet (3 m) above sea level.
What towns are near New Castle?
Wilmington Manor (1.5 mi), Newport (3.7 mi), Pennsville (4.5 mi), Wilmington (4.9 mi), Elsmere (5.0 mi).
Last updated: