New Castle, DE ZIP Codes, Coordinates & Counties
New Castle, Delaware has 1 ZIP code in New Castle county. The approximate center of New Castle is 39.647, -75.606. New Castle has about 84,639 known street addresses.
ZIP codes in New Castle, DE
| ZIP Code | County | Latitude | Longitude |
|---|---|---|---|
| 19720 | New Castle | 39.647 | -75.606 |
Counties New Castle spans
New Castle
Most common streets in New Castle
Dupont, West, Central, East, Pennsylvania, Liberty, Highland, Franklin, Windmill, New Jersey
Frequently asked questions
What ZIP codes are in New Castle, DE?
New Castle, Delaware has 1 ZIP code, ranging from 19720 to 19720. The full list, with each ZIP's county and coordinates, is in the table on this page.
What county is New Castle, DE in?
New Castle is in New Castle county.
What are the latitude and longitude of New Castle, DE?
The approximate center of New Castle, Delaware is latitude 39.647, longitude -75.606. Coordinates for each ZIP code are listed in the table above.
How many ZIP codes does New Castle, DE have?
New Castle has 1 ZIP code.
How many addresses are in New Castle, DE?
New Castle, Delaware has about 84,639 known street addresses in the sthan.io US address database.
What are the most common streets in New Castle, DE?
Some of the most common street names in New Castle are Dupont, West, Central, East, Pennsylvania, Liberty.
What cities are near New Castle, DE?
Cities near New Castle include Delaware City (5 mi), Pennsville (5 mi), Deepwater (6 mi), Bear (7 mi), Newark (7 mi).
Cities near New Castle
Delaware City, DE (5 mi) Pennsville, NJ (5 mi) Deepwater, NJ (6 mi) Bear, DE (7 mi) Newark, DE (7 mi) Saint Georges, DE (7 mi) Wilmington, DE (8 mi) Port Penn, DE (9 mi)
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View the API →Last updated: June 2026 · Data: sthan.io US address database