New Castle

City in New Castle County, Delaware

View of New Castle, Delaware
Photo: W. S. Stewart · Public domain

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.

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

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Source: National Weather Service (NOAA).

Live webcams in New Castle

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Living in New Castle

Median household income
$89,205
Median home value
$285,100
Median rent
$1,739/mo
Median age
48.5
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Map of New Castle

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New Castle Street View

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New Castle, DE population

New Castle had 5,551 residents in the 2020 Census.

2020 Census5,551
Density1,596 per sq mi (616 per km²)

Source: U.S. Census Bureau, Decennial Census.

New Castle at a glance

StateDelaware (DE)
CountyNew Castle County
TypeCity
Population5,551 (2020)
Land area3.48 sq mi (9.0 km²)
Water area0.04 sq mi (0.11 km²)
Elevation10 ft (3 m)
Coordinates39.6700° N, 75.5665° W
ZIP code19720
Official websitenewcastlecity.delaware.gov
Census code (GEOID)1050800

Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.

Towns near New Castle

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).

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