New Castle, Delaware
New Castle, Delaware | |
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Flag Seal | |
Location of New Castle in New Castle County, Delaware (left) and of New Castle County in Delaware (right) | |
New Castle Location in Delaware New Castle New Castle (the United States) | |
| Coordinates: 39°39′43″N 75°33′59″W / 39.66194°N 75.56639°W | |
| Country | United States |
| State | Delaware |
| County | New Castle |
| Founded | 1640 |
| Area | |
• Total | 3.52 sq mi (9.12 km2) |
| • Land | 3.48 sq mi (9.01 km2) |
| • Water | 0.042 sq mi (0.11 km2) |
| Elevation | 10 ft (3.0 m) |
| Population (2020) | |
• Total | 5,551 |
| • Density | 1,596.0/sq mi (616.23/km2) |
| Time zone | UTC−5 (Eastern (EST)) |
| • Summer (DST) | UTC−4 (EDT) |
| ZIP codes | 19720-19721, 19726 |
| Area code | 302 |
| FIPS code | 10-50800 |
| GNIS feature ID | 214379 |
| Website | newcastlecity |
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 Delaware Valley or Philadelphia metropolitan area.