New Castle zipcode
| City | New Castle |
| ZIP Code | 19726 |
| Type | Company/Organization |
| State Code | DE |
| State | Delaware |
ZIP code of New Castle is 19726. This place is located in Delaware state in US. To send any postal service to New Castle, you must use 19726 zipcode.
You should avoid following 1 city name of Delaware to be used with the ZIP code 19726.
- Shared Firm Zip, DE