Explore New Castle, Delaware, with this interactive street and satellite map. You can “grab” the New Castle, DE street map and move it around to re-centre it. You can change between standard map view and satellite map view by clicking the small square in the bottom left-hand corner of the map. You can use the zoom buttons on the lower right side of the map to zoom in or out to street-level detail. You will find live weather, local and world news below.
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| City | New Castle |
| State | Delaware (DE) |
| County | New Castle |
| Country | United States of America |
| Timezone | Eastern Time (America/New_York) |
| Latitude | 39.662057 |
| Longitude | -75.566313 |
| Population | 5,579 |
| Density | 612.7 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 19720, 19721, 19726 |
| Area Code | 302 |
| County Seat | Wilmington |
| School District | Colonial School District |
New Castle is a locality in New Castle County, Delaware, United States. It has a population of approximately 5,579. The population density is 612.7 people per km². New Castle is located at 39.6621°N, 75.5663°W. It observes the Eastern Time (America/New_York) timezone. ZIP code: 19720.
New Castle, Delaware, unfolds with a quiet dignity along the broad curve of the Delaware River. It lies 5.9 miles south of Wilmington, DE (from Wilmington, DE: bearing 190°T), and is situated 9.9 miles east of Newark. Its landscape, a gentle transition from the river's edge to rolling hills, is marked by the sturdy brick homes and mature trees that line its historic streets. The air here, especially on a late afternoon when the sun begins its descent, carries a faint, salty tang from the river, mingling with the scent of blooming magnolias in the warmer months. Cobblestone remnants peek through the asphalt in places, a subtle reminder of pathways worn smooth by generations. The overall character of New Castle is one of enduring grace, a place where the past feels not distant, but comfortably present. This riverfront settlement, rich in colonial history, was once the capital of Delaware, a vital hub for trade and governance. Its economy, historically tied to the river and agriculture, has evolved, yet the echoes of its past are palpable in the preserved architecture and the enduring spirit of its residents. The historic New Castle Court House stands as a proud sentinel, having witnessed pivotal moments in the region's formation. While industry has ebbed and flowed, the deep-water port continues to play a role, and the nearby natural beauty of the Delaware Estuary provides a constant, calming presence, a reminder of the natural rhythms that have shaped New Castle for centuries.
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This page provides an embedded street and satellite map of New Castle, Delaware — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 39.662057, -75.566313. Live weather conditions are sourced directly from the National Weather Service, with current observations and a 7-day forecast also powered by Open-Meteo. Real-time local news and world news feeds keep the page current, while a Wikipedia summary or an editorially written description provides background on New Castle and New Castle County.
Detailed location data for New Castle includes the ZIP code (19720), telephone area code (302), county seat of New Castle County (Wilmington), and school district assignment (Colonial School District). These are among the most commonly searched location details for any US city or town.
Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity — ensuring the correct New Castle is identified even where the name is shared across multiple counties or states. Population figures are sourced from the 2020 US Census.
| Page generated | July 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. Location verified by proximity — not name matching alone. |