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 | 0.04 sq mi (0.11 km2) |
| Elevation | 10 ft (3 m) |
| Population (2020) | |
| • Total | 5,551 |
| • Density | 1,596.03/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[2] |
| 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.[3] New Castle constitutes part of the Delaware Valley or Philadelphia metropolitan area.
- ^ "2020 U.S. Gazetteer Files". United States Census Bureau. Retrieved October 31, 2021.
- ^ "New Castle". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "The Delaware Census State Data Center". Stateplanning.delaware.gov. Archived from the original on December 31, 2016. Retrieved March 30, 2013.